> though mine takes sort of the opposite approach, input and manipulation is very visual. There is already opensource app for that: microMathematics Plus (μMat

> though mine takes sort of the opposite approach, input and manipulation is very visual. There is already opensource app for that: microMathematics Plus (μMath+) — Extended visual calculator for Android.[0,1] [0] https://github.com/mkulesh/micromathematics https://github.com/mkulesh/micromathematics [1] https://f-droid.org/packages/com.mkulesh.micromath.plus/ https://f-droid.org/packages/com.mkulesh.micromath.plus/