The application contains more than 800 formulae integrated in 144 calculators.The program calculates the following: Area, Volume, Angle, Diagonal, Altitude, Radius of Inscribed Circle, Radius of Circumscribed Circle, Cathetus, Hypotenuse, Radius of Circumscribed Sphere, Radius of Inscribed Sphere, Side, Median, Bisector, Area of Base, Area of Surface, Area of Axial Section, Area of Lateral Surface, Area of Edge, Side of Base, Perimeter, Perimeter of Base, Radius, Edge, Face, Apothem, Arc, Tilting Angle of Face, Tilting Angle of Edge, Tilting Angle of Generatrix, Angle between Diagonals, Arc Length, Cone Angle, Midline, Diameter, Сircumference, Chord. Two-dimensional figures: Circle, Rhombus, Triangle, Rectangle, Trapezoid, Square, Parallelogram, Ring, Sector of Ring, Segment of Ring, Ellipse.Stereometric figures: Cylinder, Cube, Sphere, Parallelepiped, Pyramid, Prism, Cone, Tetrahedron, Truncated Pyramid, Truncated Cone, Octahedron.

// Option A //

To download allcalc mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download allcalc mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download allcalc from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search allcalc in HappyMod App.