Originally, I planned to do a series of "School Tools" apps that would help kids by assisting with various calculations.

Be it with home works, for learning, or just to help them understand how certain things can get done. After this first app, some private projects kept me away from doing more, and now, years after this first tool, I am not sure, whether I will continue this series as my focus changed to a different kind of apps.

But anyway, the proportion calculator is here and I keep it maintained through the Android Versions to come!