This app turns your keyboard into a powerful calculator, allowing you to perform calculations directly within any application. Avoid switching apps and copying numbers by calculating on the go, whether you're texting, taking notes, or browsing.
Summarized from real user reviews of Calculator Keyboard. Based on 491 reviews and a 4.7/5 average, it highlights the 10 positives and 7 negatives reviewers mention most about this Utilities app.
4.0
July 26, 2026
• Performance improvements • Bug fixes
Unlimited Access to All Features.
$5.99
Calku Pro - Lifetime
Unlock All Features
7 issues
Cannot delete the app
App is buggy sometimes
8 requests
Add thousands separator for numbers
Haptic feedback on key presses
This application transforms your device's keyboard into a fully functional calculator. It allows you to perform calculations directly within any app you are using, eliminating the need to switch between applications or copy and paste numbers.
Key features include the ability to calculate within any app, support for Dark Mode, customizable decimal points, a powerful scientific calculator, access to your calculation history, and keyboard feedback options like sound and haptics.
The application is free to download and use, offering core calculator functionalities. It also includes in-app purchases, which may unlock additional features or customization options for users who wish to enhance their experience.
This calculator keyboard is designed to be compatible with a wide range of applications. This includes messaging apps like Messages, Messenger, WeChat, and Line, as well as browsers like Safari, note-taking apps, mail clients, and many more.
It simplifies daily tasks by integrating calculation capabilities directly into your typing experience. Whether you're quickly checking a price while shopping, solving a problem for homework, or managing finances, you can do so seamlessly without interrupting your workflow.
