Thank you for the review of http://www.atomkeep.com. We are working hard to make it satisfy our users — and satisfy US – because we are using it ourselves!
Speaking about the trust — actually, it’s very important to note that Atomkeep does not store any passwords. You enter the password and it is included in the synchronization transaction, but that’s it. We do not save the password nowhere, do not cache and do nothing about it. The only thing which Atomkeep stores is the login (username) — but just to make easier for the user to remember it.

Thanks again for the review! We love all the feedback coming from our users!