Calculator is an application which must be in all devices, because no one knows when and where you need to calculate something. This calculator is very easy to use, it does not have any scary and complicated functions, only those that are in the usual everyday pocket calculator. In addition, you can always change the color of this calculator, if you\'re tired of everyday gray colors... You can for example choose the pink :)
The main advantages of this calculator is:
- Simplicity and ease of use.
- Stylish design.
- Ability to change skins (colors), you just need to click the menu and go to the settings.
- A lot of functions, including %, logarithms, trigonometric functions and factorial
- Ability to change font
- Supports multi-window mode (if your device supports it)

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// Option A //

To download Calculator mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Calculator 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 Calculator 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 Calculator in HappyMod App.