Show HN: Turtl – A secure, encrypted Evernote alternative | Hacker News Reader

Show HN: Turtl – A secure, encrypted Evernote alternative

turtl.it

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I'm sorry but I don't think you should call this an Evernote alternative.

- No iOS client (Although the site does say coming soon)

- No Firefox webclipper

- No Web interface

- Large / heavy application

- No Drawing / Diagram support

- The app is not native, it's seems it's a web frame

It's interface doesn't feel very snappy, it feels like it's built with in a Javascript framework perhaps?

Evernote has been around for a long time and has grown to 110MB uncompressed / installed, this app is 100MB and it's only in its early stages and has hardly any features implemented yet - that's worrying to me.

Looking at OSX's power utilisation Turtle appears to often utilise one CPU core heavily under load where Evernote seems to thread processes more efficient and ends up using around 60% less power on my 2015 Macbook in the use I put it through which was common activities such as adding and removing notes, copy / pasting text, launching and closing the app etc...

What I do really like is that it uses Markdown, that's something sorely missed in Evernote.

I'm really sorry to be quite harsh, I really do love when people try to improve software by creating their own alternative and that's something that's sorely needed in the land of Evernote like apps, however I don't think this comes close to a possible alternative.

I'm seeing about 80% less power on a mid-2012 Macbook Air with a 2GHz Core i7 for Evernote vs. Turtl. I'm guessing more parallelization is even more beneficial on lower speed multi-core processors.

If it is a JS app of some kind that would make sense, I've been ranting a lot about JS apps recently so I won't go into it here - needless to say they're anything but efficient in my experience.

Edit: Also, I should note that I have many hundreds of notes in Evernote, where I created 15-20 in this app, I would have expected Evernote to need more resources to search such a large number of notes.

  ~/Library/Application Support/com.evernote.Evernote  % du -sh .
  608M	.

Turtl stores all notes in what amounts to Chrome's IndexedDB engine (encrypted...no plaintext data is stored on disk). So it really comes down to the efficiency of IndexedDB's storage engine when translating notes to disk space.

We do utilize multiple core when encrypting/decrypting, but things like indexing and searching all take place on the same thread the app runs on.

This is something that could be improved in the future.

TL;DR for parent comment: "It's not as mature as Evernote, and it has a bigger footprint." Therefore your comment is unfair: if provides a less complex evernote function that many could use.

Neither of these is unfixable over time, as the product develops, and some may be a function of the increased security implementation. None of these criticisms stops the app being usable, as far as I can see.

> Neither of these is unfixable over time

JS on desktop is never going to perform well.

maybe not well, but possibly well enough.

Not from what I've seen, after hosting a bunch of NodeJS based web-apps I can tell you it doesn't perform well on the server-side or on the desktop. It's a decent rapid prototyping language / tool - but it's taking what should (or perhaps shouldn't) be in a web browser, wrapping it up and hosting it somewhere that the designers of products often don't know much about the landscape.

For the majority of users, it performs well enough. Step out from behind your own lens. For instance, the number of times I've heard someone complain about Slack's performance (that isn't a developer) is precisely zero.

I think my lens is actually quite large, I have 15 years of production experience hosting, building, deploying applications and build pipelines, currently I'm working across 20~ end user facing products in their various application life cycles, backed by hundreds of services running across many hundreds of instances. They scale from applications that turn over only 3-5RPM up to 8000 RPM throughout the day. We host and deploy Python, PHP, Perl, Ruby, JS, Erlang, Go and Java apps. I can say without a doubt that the JS (in our case NodeJS) apps are by far the worst to work with, not just in regards to performance but also in regards to community quality.

*Edit: clarification

You are right. It's good enough for many apps. I probably have several nodejs/electron/js desktop apps running and I have no complaints. It is the most cost effective way to target multiple platforms and the development experience is fantastic without having to get into .net win forms or xaml/wpf on Windows or the monstrosity that is Xcode/UI builder or God forbid Java or the worst Dev ecosystem that is android/eclipse.

So let's be practical here. If I am doing a startup or a side projects I am definitely going with JavaScript on the client - I have more freedom on the server and will probably pick either elixir/Phoenix, rails or .net

This is biased hokey. JavaScript is very fast for what it's built to do, and it keeps getting faster and used for more applications. Another problem is many JavaScript programmers actually don't know how the language works. They think they know how to use it because the barrier to entry is so low. It is long past time that people start recognizing JavaScript as a real language and not some browser add on.

Then get rid of JS. I doubt Turtl is married to JS, it just happens to be the greatest common denominator.

A complete client side code rewrite to get rid of something is pretty much married to it.

In a start-up? Absolutely not true. This is the first version. I would suspect, as many go that route, that the "website in a frame" is replaced by native. That's typically the direction everyone goes in until they're already an expert at a specific platform and want to start on one instead of multiple.

Stuff gets rewritten all the time when it makes sense to do so. That's rarely a big enough issue that you decide you'll never do it.

Howso?

Just like the new macbook pro's, which are thermalthrottling as soon as you look at pictures of cats. You could say they never going to perform well, but then you could always throw it in a cold bath.

Because it implies running on top of a VM and much worse rendering data through HTML/css.

Thanks for the honest feedback! The app IS a web frame, both on desktop an mobile. TBH it's pretty much the only way I can maintain it on 4 (and soon 5) different platforms efficiently.

I will say this: Turtl will queue encryption/decryption in background threads so it does utilize cores while doing heavy processing. As far as how it utilizes cores in the main UI, that's really up to the underlying javascript engine, which most likely will be single-threaded unless instructed otherwise.

> I'm really sorry to be quite harsh

Not harsh at all. Turtl is a start, a goal. Evernote has so many features and so many use-cases for so many people. I agree saying it's a viable alternative right now isn't entirely true, but for those who value privacy over features, Turtl is worth a look.

Great response, thanks for taking the time to read it, I always feel really quite guilty when someone puts a lot of hard work and passion into something they care about and I feel I need to point out problems - I am constantly conflicted between not saying anything and speaking up, in this case I spoke up because I absolutely agree with the need for Evernote-like products.

Regardless of my technical opinions congratulations on launching your app publicly and I'm sure you learnt a lot along the way.

*Edit: Typos

"The authors argue that the major problem in many negotiations is that people assume positions that are either Hard or Soft. They suggest that, rather than being either hard on the people and the problem, or soft on people and problem, it is possible to be soft on the people and hard on the problem. They call this approach Principled negotiation or Negotiation on its merits." Getting to Yes - Roger Fisher, William Ury

And my personal motto as a system tester: "It's my job to show that stuff is still broken and tell in it such a way that my head won't be chopped off and people stilltalk to me."

Hello! I agree with mrmondo insofar as Turtl is too immature for me at to me at the moment.

That said, please post updates -- I'm on the lookout for Evernote alternatives, now that its demise seems imminent.

I don't use any of the fancy evernote features, so if you're interested, this is what I'd require at a minimum:

- Save and sync text between OS X and Android

- Button to take a picture and insert it into a note

That's really all I use.

Onenote is superior to Evernote. The problem is I have so many notes in Evernote I am too lazy to switch

There is still some manual work you have to do to organize them but you can use this tool to import all your notes from Evernote into OneNote: http://stefanstools.sourceforge.net/Evernote2Onenote.html

Have you tried Centrallo? Centrallo 2.0 Global Productivity App Adds Evernote Import Wizard to Its List-Making Features and Adds Former Evernote Executive Heather Wilde to Its Team http://www.prweb.com/releases/2016/02/prweb13198898.htm

To your credit, the feature you're adding is far more important to me than any of the minor Evernote features the parent mentions. So don't sell yourself short.

I currently find myself stuck syncing text files using SyncThing or ownCloud or making notes in my KeePass database just to get the level of privacy I want in this.

I saw Turtl before and this makes Turtl highly appealing to me, I'll definitely be trying it out more thoroughly as it looks like mobile support has matured since last I tried it.

One thing I seem to remember having an issue with was DPI scaling support, I use 4k screens at home and at work, but everything was blurry as the apps didn't support DPI scaling - any chance this has been addressed?

Another issue I seem to remember was self-hosting, I'd most likely self-host it (though I'll definitely chip you a donation if it's all working), but I didn't see any way to configure the server used - did I miss something or has this been added now or would I need to recompile to do this?

Thanks for all your hard work.

EDIT: Just tried it again - DPI scaling on Windows is now working and there appears to be a button to change the server. Sweet. I'll be moving in to this tonight if all goes well. Thank you again. This looks like an excellent product.

I noticed your page doesn't have a donation link though and since I intend to self-host I can't send you anything, any chance you can put one up?

EDIT2: Hmm, noticing something strange here - I thought the DPI scaling was working when I saw the notes in the main screen looked very sharp, http://i.imgur.com/BfSDcca.png but when I view notes expanded it seems to lose its sharpness. See http://i.imgur.com/gpJ7zsC.png

I'm not sure what the reason for this is but I've noticed similar problems with Atom and other browser based solutions so perhaps this is unavoidable for now, in any case it's much better than it was before.

This is great feedback. I've tracked the DPI issue here: https://trello.com/c/55CRuNmY. Also, it's kind of dumb I don't have pricing enabled yet and I don't have a donate page. Should have thought of that =]. Thanks for checking out Turtl again!

My solution to this problem is to use LastPass. The crypto is about as good as you can get, the only problem is that its not Opensource. LastPass runs literally everywhere, every browser, every device.

Markdown support in the notes would be quite nice. The UI could be improved for that usecase as well.

I really like having only app for those use cases.

I really like that I can use my Yubikey for 2f authentication over NFC.

"As far as how it utilizes cores in the main UI, that's really up to the underlying javascript engine, which most likely will be single-threaded unless instructed otherwise."

So I haven't looked at the code yet but there are many ways to make a web / JavaScript app feel snappier. There is the basic "do everything async" so you, more frequently, release the thread back to drawing / changing the DOM. Some others including:

- Making sure you got rid of the 300ms delay on mobile devices (http://stackoverflow.com/questions/12238587/eliminate-300ms-...)

- Making use everything is minified, combined and loaded up front to ensure initial loading is quick

- If you're using a front end framework look into whether there exists optimizations for speedup otherwise if you profile and find a lot of time is being spent in the framework you may want to work directly with the native DOM APIs

I won't keep going but I've seen a very small, handful of html / javascript mobile apps that have felt practically native in speed so it's possible. But I certainly agree that when first starting up it's a great way to go. React Native may be another good stepping stone.

I don't see drawing/diagram support as a needed thing - at least not in my use-case. My ever-note is entirely full of text.

But I agree that speed is critical. The most important features of a note taking program for me are speed and durability (in the database sense - no worries about data-loss). If it's long to navigate to the last viewed spot in my shopping list or my workout log, I'm annoyed.

> I'm sorry but I don't think you should call this an Evernote alternative.

Everyone has to start somewhere. Being a new company, calling yourself an Evernote alternative says to me that you're either available everywhere or you will _eventually_ be available everywhere. Maybe not being available everywhere right now is too much of a down point for you but it may be fine for others.

This strikes me as an MVP and it looks like a good start. Saying Evernote took forever to hit 100MB and this app just starting out at 100MB doesn't mean anything but you're implying it'll only balloon further. When they get a revenue stream and / or funding and go full native I would suspect that size would go down considerably.

I think your points are fair but I think you're looking at this company as something far, far more than what it really is.

https://github.com/turtl/js/blob/2ca59900d71284795e278e75585...

Nothing says secure like PBKDF2-SHA1 with 50 rounds.

https://github.com/turtl/js/blob/2ca59900d71284795e278e75585...

...or timing attacks on MAC validation. (Yeah, you switched to GCM, but a downgrade attack could potentially be used to find a valid MAC for a chosen ciphertext without the attacker knowing the key...)

"When the standard was written in 2000, the recommended minimum number of iterations was 1000, but the parameter is intended to be increased over time as CPU speeds increase. As of 2005 a Kerberos standard recommended 4096 iterations,[2] Apple iOS 3 used 2000, iOS 4 used 10000,[3] while in 2011 LastPass used 5000 iterations for JavaScript clients and 100000 iterations for server-side hashing"

source: https://en.wikipedia.org/wiki/PBKDF2

*Edit: Oh.. it's PBKDF1....

Nope, PBKDF1 was a typo.

how can anyone take anything seriously that requires 1000 iterations. if iterations had an exponential function then the difference between 1000 iterations and 10,000 is ridiculous, like the difference between 16 bit encryption (no such thing, this would be a joke) and 160 bit encryption.

But if it's not exponential, then adding thousands of iterations doesn't do much. Maybe instead of 1 day to break it, now it takes 1000 days, or instead of spending $4,000 on CPU time now you need to spend $4M to crack it. Big deal - it's just as broken.

So can anyone explain the math here? How can they seriously suggest linearly increasing the number of iterations over time?

Attackers can use special hardware (ASICs, for example) to perform a lot of low-memory but CPU-intensive calculations quickly. Modern KDFs emphasize a property called memory-hardenss: It should be reasonably fast on consumer devices, require a reasonable amount of memory, and trading off memory usage should require an absurd CPU slowdown.

PBKDF2 doesn't have this property, so if you're forced to use it, the standard recommended iteration count is 86000.

50 is a joke.

so it's not really exponential - if ridiculous amounts of memory somehow became very cheap and available, then it would break it? this is quite different from the exponential properties most encryption has. I would expect "ridiculous amounts of memory" to mean "more bytes than the number of atoms on Earth", that sort of thing. It sounds like rather than these kinds of theoretical limits, they chose much more practical limits - which seems a lot more dangerous and less future-proof, but I guess I'm not an expert.

As attackers get better, we can just up the ante. More rounds, more memory usage, etc.

If you're building software in 2016, you want to use one of the following for turning a password into a crypto key:

    - Argon2
    - scrypt
    - bcrypt

PBKDF2 should be your last resort. Don't fall back to a simple hash function.

that makes zero sense. something encrypted in 2001 isn't supposed to magically become plaintext in 2016 because "attackers get better." it's fundamentally not the promise of encryption. (I thought.)

Uh, no. AES was originally only slated to survive until 2030. Advances in cryptanalysis are hard to predict, but attacks always get better.

Wait what? It feels like you're trying to argue with the results of Moore's law. How does it make zero sense that what would have taken years on 1990s hardware now may only take weeks on 2016 hardware?

Why do you think recommended password length and complexity has increased?

Why do you think the default for RSA key length is 2048-bit now instead of 1024?

> Nothing says secure like PBKDF2-SHA1 with 50 rounds.

This code is deriving an encryption key and an HMAC key from a master key. The master key is already a random value, so even if you managed to "crack" either one of the derived keys, you wouldn't know it.

> or timing attacks on MAC validation

Good point, I'll fix that!

The correct tool for the key-splitting job is HKDF.

If SJCL doesn't offer HKDF, I'll be surprised. It's not hard to implement, however.

Thanks. I researched key splitting when I was building the CBC+HMAC version of the crypto, but HKDF never came up. This is why there are experts (which I do not claim to be).

Your feedback on the crypto side of things is really important and well received. I appreciate you taking the time to look through the code.

> This is why there are experts (which I do not claim to be).

Heh, humility goes a long way towards becoming an expert. ;)

Thanks for taking this feedback well. :)

Also, a friend in IRC point out that:

https://github.com/turtl/js/blob/master/library/tcrypt.js#L6...

Your default iterations here is only 400.

I was going to rail against another app I could be interested in which forces an Android installation through Google's Play Store.

Then I noticed the link to sources on GitHub and the ability to build the APK oneself.[0] I will certainly try this. Thank you for the option.

[0] https://github.com/turtl/mobile

Hi everyone, creator of Turtl here. It's getting late here (2:15 am) so if you ask a question or have feedback, I'll be able to get back to you in a few hours. Thanks for checking out my project!

Hi May I have two recommendations? - put more screenshots on the web page to apetize us - if you provide server... provide it as an Docker image too, so it's easy to test

Looks good anyway, I am going give it a try.

Thanks! Lots of people are requesting docker images, so this sounds like the way to go. I'll look into it.

It's really neat to see that the backend is built with RethinkDB and Common Lisp. I am looking forward to setting up my own instance from source and playing around with it. Great project.

I feel the UI (of the desktop version) is a bit lacking.

Within one minute from installing it, the following happened.

I added a note: a text note, fine. So a side bar opens...

Why is it only ever a side bar? I have a 1920px wide monitor - not really unusual - but you're forcing me to edit my notes in a fixed 700px sidebar, the rest of the screen estate just darkened out. Evernote lets me use all my screen.

But I've typed some stuff in. So, I'm clicking on "Add text note", the first most obvious call-to-action that catches my eye. A dialog pops up: "The note has unsaved changes. Really leave?". Well, I just clicked on "Add text note", what do you mean?

Only after a while I realized that I'm not supposed to click on the most prominent (white on black) caption bar at the top, but on the greenish "Add" in bottom right corner. Even though the title does say "Add text note", which is as explicit as it gets.

Okay, time to edit my note. It opens in preview mode by default, I still have to click on a floating button to make it editable - another little mental bump, but okay.

I can click on an eye icon to get a preview of the note. Once I do that, the eye icon vanishes, and I'm left with an uneditable note. That's quite weird, normally the "eye" icon would just be replaced with a symbol indicating return to edit mode, allowing to switch back and forth with no fuss. Makes sense, especially sice it's easy to anticipate that the preview function would often be used just to quickly catch a glimpse of whether our work (markup, etc.) looks fine, and further we go, it's not a Rembrandt painting : )

Not here, though - I click on the eye, but in order to resume editing I have to move mouse cursor to the left now, and tap on the "<-" back button. Or, as it turns out, anywhere outside of the magical 700px wide (36% of my screen) get-things-done area.

I guess I'm sort of a power user (I'm a software dev for starters), so these confusions don't stop me for more than 5 seconds each. It is frustrating nevertheless, because being computer-savvy, I'm not used to that. And when my mum clicks "Add text note" only to be asked if she really wants to cancel all changes, I can tell you she'll look like a deer in headlights rather than mumble "what's this bs" as I did ; )

I understand you're an indie dev, but hallway usability testing doesn't require hiring focus groups etc., all it takes is have a few people sit in front of the monitor and watch them go at it

I saw the "pricing" link at the top and was about to shit all over this for a privacy oriented app being closed source, until I scrolled to the very bottom and saw the innocuous open source note. May want to emphasize that more.

This app has been a balance between advertising the fact that it's open source and just presenting itself as a "privacy app" without shoving it in people's faces. Maybe it should be a bit more prominent (and thanks for reading to the bottom)!

To be clear, the pricing section only applies if you connect Turtl to our hosted service. If you run your own server, the only pricing that applies is the price you pay for the server you run it on.

I actually love this business model: web/api server and clients are all Free Software, and the developer or company behind it runs the "canonical" hosted service. I hope it works out for you.

Evernote made the mistake of going multiplatform really aggressively and too much scope creep. I'm glad to see they're scaling back a lot of their scope creep.

Goo on you for trying to do this. Be ambitious and swing for the fences. Evernote's product crashes frequently.

Honestly, one of the main reasons I use Evernote is because it's Mac and iOS clients are so damn good, other than a few performance issues on websites with a lot of elements that have been clipped (and hey even Firefox struggles with those), I honestly can't remember the last time Evernote has crashed on either platform.

On which platform? I use Evernote a lot on Windows and Android, and a bit on iOS, and haven't seen a crash in a very long time.

OSX: lots of crashes, sync errors, etc.

Out of my experience it's stable on Windows, although lacking in other departments (eg. no dark theme)

One of their strength _is_ multiplatform support. There was and is tons of scope creep. Hopefully they can turn that around and start improving core functionality again.

I'm glad of an alternative, mostly because Evernote being the last bad option to date, has terrible UX. And the search is substandard. I use it because I can use it on mobile and desktop, and back it up frequently to multiple formats in case Evernote dies, or wipes my data in error.

(Please everybody who uses note apps, back them up now to external files!)

I've been looking for alternatives to Evernote for a long time now, but haven't found a viable one. Thanks for making this, I'll definitely check it out!

Apple notes (in iOS 9 and El Capitan) is also a secure, encrypted Evernote alternative: https://support.apple.com/en-us/HT202303

Coming from an academic/artistic background, very very far away from the TECH industry, I've found turtl really helpful for cataloging research for upcoming projects. I think it has really great potential for people working in project based industries who need confidential platform to store large amounts of research. Although many people do not have a need for privacy in their bookmarking, it is definitely a major consideration in many other professions outside of TECH. Although it may not be as smooth running as Evernote right now, I think that privacy for my research is a trade off worth noting.

This is pretty sweet but the UI does leave some to be desired. It would be awesome to have a UI similarish to onenote or a few others where on the left side you have a list of your boards, then either on the left or right side (users pick) you have a list of items in the board, then the rest of the screen is whatever the item is. It is a really nice start and has a lot of potential but without a web version it just wont replace anything I use right now since you dont seem to support any of the BSDs and I do a lot of switching between Windows Linux and OpenBSD

I tried it. I like this app, especially this tile interface. And it won't scramble all of things into notes like evernote. bookmarks, files, notes are separated. seems nice.

cons:

- You need to take certifications for OSX app - it's scare to install un-certificated apps - Uploading file and images should be merged - I don't want to care whether it's image or not, App should detect, isn't it cool? - The note editor, it's too poor to use. and default height of textarea is too thin. expand it to users want to write something.

http://i.imgur.com/sDzAMjg.png

That’s a rather large font size.

Well yeah, we need a callout or customers won't know where to look.

In all seriousness though, it seems the site has linux/chrome issues. I am looking into it.

Thanks for the screenshot =]

It has IE11 issues also. http://i.imgur.com/flVRw9M.jpg

On macbookpro 13", safari, header background takes 50% of webpage area. Chrome and FF looks good.

Just a heads up: I'm being shown the Windows x64 button and I'm using a Mac (OS X 10.10) and Firefox.

There is only one button on the front page but you seem to support multiple platforms so I'm assuming this is a bug?

Same thing happened to me. If I hadn't dug around a little I would have assumed it's a Windows-only app and moved on.

Does it run on my own server, encrypting data with keys the server never sees?

Yes.

Is it possible, or maybe I should offer, to encapsulate this in docker using docker-compose? I find it easier and cleaner to try new things out running docker-compose up.

By all means, if you want to take on this project I'd gladly advise and link to it from the server page. I don't know enough about Docker to be useful for that portion, but I can certainly help in getting the server set up properly.

I'll work on this tonight, EST, but if someone beats me to it please don't hesitate to link to them first. Thanks for the reply.

Evernote is so good that I just can't see myself transitioning. I wish the best services would offer strong encryption as a default.

This is the game these companies play - they provide a service so slick that people will use it regardless of the privacy concerns.

And of course I am one of those people... I use Evernote because I can take notes anywhere very easily (in my browser, my OS, my phone) and then have access to them always in sync very easily, online and offline. Couple that with nested tags and saved search queries and I unfortunately see no competition, regardless of privacy measures. I don't care if my data is encrypted properly if I don't have easy access to it.

I'm in the same boat. I know the risks, but I've essentially entrusted my entire online presence to third-party services.

Why? Simply because they are better.

Ugh, this isn't acceptable.

Out of interest, do you think they are mostly better or easier?

I guess it comes down to weighing the cost of your time / effort into researching / using alternatives vs the risk of trusting random people from the internet - of course there's no one answer or solution so it's probably case by case depending on the data being transferred or stored IMO.

Like almost all 'cloud' services, I treat all data in Evernote as non-confidential and thus don't keep private information within it and I take regular backups. Do I trust a hobby / standard web-dev project as any more secure just because they day it is and might have an extra layer of encryption - no.

This is important: there's a trust barrier to entry here. Why trust some random guy on the internet? You wouldn't. Nor would I expect anyone to actually pour through the source code to determine if the crypto is sound.

Sometime soon I'm hoping to get enough cash rounded up for a security audit and get a few thumbs up from the security community so at least you won't be taking my word for it. Not only that, I'd love to make the product rock-solid. As much crypto as I've studied in the past few years, nothing beats an expert looking things over.

http://www.prweb.com/releases/2016/02/prweb13198898.htm Centrallo 2.0 Global Productivity App Adds Evernote Import Wizard to Its List-Making Features and Adds Former Evernote Executive Heather Wilde to Its Team

Is something wrong with the CSS on the site? Everything looks kind of overly large in my browser (Desktop Linux Chrome).

Same here on my linux machine

Proportions wise it all looks on Firefox 44 and the CSS seems to be valid, the image of the phone is however 360KB but that's the kind of large you're talking about.

Just to add in a screenshot, here's what it looks like on my copy of Chrome on Linux: http://i.imgur.com/6YPbAg6.png

Nice app. Please please add any sort of import capability

(You can look at simplenote export/import csv/json format)

I really like the idea of a secure Evernote alternative. For me, however, the by far most important feature is decentralization. Until someone builds this I'm stuck using org-mode and a git repo...

It is decentralized: https://turtl.it/docs/server/

You only use their servers if you want to.

See also http://lexiy.com secure notes, but not documents.

Are you using truecrypt? Isn't that a dead project with security issues?

It's a forked project with leadership-drama issues, but several ongoing audits haven't turned up any serious security issues.

The original anonymous maintainers apparently tried to kill it, for reasons that aren't clear, by saying that it's insecure. It seems to have been a red herring, and their suggestions of alternatives were comically bad.

Lots of people are still using the last Truecrypt release, or one of the several forks that have sprung up that have attempted to improve upon it in various ways (sometimes in incompatible ways, though). Hopefully the situation will stabilize with one clear winner in the future.

No, they are not using truecrypt. They're using SJCL for AES-GCM and OpenPGP for public-key encryption.

Why on Earth people are not using git? on iOS it is Working Copy app. any good client for Android?

I think the Android client is good, but I am biased. iOS coming soon.

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