Everyday - Take a photo of yourself everyday.

Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...

TickTick - TickTickis a cross-platform to-do list app & task manager helps you to get all things done and make life well organized.

Automate - Automate various tasks on your Android smartphone or tablet.

Habitify - The easiest way to keep track of your habits

Locale - Locale helps content owners and translators work together, so Rails developers are free to write more code