Show HN: I built an app to text myself and get reminders, notes, journal, etc.

I started this around 2 years ago to explore my love for using apps like Signal for notetaking and its potential to extend this to so much more.

tetr lets you create checklists, reminders, notes & more through one familiar interface: chats (also known as Spaces). No fancy AI or internet needed, just an instant & easy way to get your thoughts in. When you want it, you can also access your data in traditional views like your average todo app.

Currently available on iOS, iPadOS, MacOS as a universal app; end-to-end encrypted sync beta will be available soon.

Features:

* Offline-first: all on your device, with E2EE sync coming soon.

* Routines: set reoccurring texts to be sent to your Spaces and use them to build habits, get affirmations, and more.

* Calendar integration: text reminders & see them in your device calendar right away.

* Share content & links like you would to any other messaging app.

* Journal view & mood tracking.

* Basic markdown support.

There's still a lot to come, starting with sync and ending with a better desktop experience & greater customization and extension options. Would love to hear what you think and feel free to ask about it!

Built with Flutter and Realm / Atlas Device Sync (note I work on the sync SDKs at MongoDB but this is purely my personal project)