Calku turn your keyboard into a calculator simplifies the calculation. You can use it at any time, such as when sending messages, doing homework or taking notes. No need to switch apps, no copy and paste required. Compatible with all applications.

Supported Apps :
• Messages,Messenger,WeChat,Line,Twitter,Telegram,Instagram
• Notes
• Mail
• Stocks

Features :
• Dark mode supported
• IOS 14 supported
• Ipad supported
• Decimal point configuration
• Calculation history
• Keyboard sound

What’s New

Version 1.5

• Performance improvements
• Bug fixes

Ratings and Reviews

4.6 out of 5
12 Ratings

12 Ratings

Scott1155 ,

Calku Works Great!

I came into this app by accident as I was not looking for a calculator, but I must say this app really works great! I have found this app comes in handy to do a quick calculation while in other apps. The app is easy to use and performs well. My thanks to the developers for a simple app that performs great. Job well done!

Th20967 ,

Great idea!

I’m surprised that no one thought of this sooner. Very useful

App Privacy

The developer, Supagarn Pattananuchart, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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