CipherTxt is an Android project I started with Chris Lim that lets you encrypt arbitrary text with a password. It just uses a simple XOR cipher, so it’s not very secure, but it’s better than nothing. I may implement a couple other encryption algorithms if I feel like it. I haven’t worked on it for awhile, but I just pushed a small update yesterday. Anyway, sourcecode is here, and the Android installer is here. Enjoy!