Just a Counter Application, that simply count things and it doesn't do anything else. It lets you create multiple counters and stores the countings in the local device memory. It also can import and export the application data.
It doesn't have any kind of ads, it doesn't need any permissions, you don't have to log in or sign up in order to use it, and It's Open Source so you can play around with the code and make your own version of the app!
The App code is available on the GitHub repository: https://github.com/alterebro/counter-app