FND

FND (Film is Not Dead)... Store, in one place, all your knowledge and experience about film development, completed with times, dilutions, and your notes about any particular film or developer, or combination of both.

But that is not all. FND also helps you in the development process, thanks to its built-in timer. A timer that suggests when you should agitate your development tank (each 30 seconds), and that can go fullscreen, so you can see how much time is left from your bathroom sink.