I like the idea. I like the idea that the app is device agnostic. I especially like the idea that the data is private.

However I can't see any information to back the privacy claim:

- Is the data encrypted on the client so that F-Secure (and the NSA / GCHQ / <Insert Orwellian agency here>) cannot access my data?

- Are the servers outside the United States?

- Is the corporation outside the United States?

I'm guessing the answer to all the above questions is 'no'.