We are thinking that it might be a good idea to have an external person or organization review our code from a security point of view. I have seen good security reviews of Android apps before, but I don't remember who did them so the first question here is if anyone has recommendations for us? Thanks to our sponsors we can pay for this.
(dislaimer: There is no reason to believe Tusky is insecure or something, we just want to be double safe)