I launched Cheddar for android. If you havent heard of it, its a really cool To-do list and was only available for iOS and the web. The app is doing quite well and the code is open source.

Here is the link to the app: https://play.google.com/store/apps/details?id=com.creativepe...

And here is the code: https://github.com/aliHafizji/Cheddar-Android