Features :
+ Geometry
+ Equations and inequalities
+ Square function
+ Linear function
+ Linear system
+ Circle equation
+ Mathematical sequences
+ Algebra
+ Vectors
+ Units (calculator)
Required Android Versions : Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]