FxCalculator APP
But that's not all. It also has an advanced editor mode hidden under the "Fx" button. In this mode, you can write an expression with your virtual keyboard as if you were writing simple programming code. You can use variables and functions, combine them, and write custom ones. They're stored on the phone so they can be actually useful to you more than once.
What's also important, FxCalculator is written in Scala 3.3, JavaFX, Gluon, and built with GraalVM Native Image. It's apretty unusual tech stack for an Android app. If you are interested in how it's possible check this GitHub repository:
https://github.com/makingthematrix/scalaonandroid/


