The Coffee Brew App helps you make great coffee.
It is a timer and lets you give a rating to your brew. This, along with the amount of coffee and water used, is stored in the history. The app then uses the history along with sophisticated statistical methods to help you improve on your brewing. It gives you feedback on which coffee type you generally likes best, the optimal brewing times and optimal grind-settings to finish making your hand brew on time.
The coffee brewing methods currently supported is, hand-brew (V60, Chemed, etc.), french-press and Aeropress.