Calculator Keyboard - Calku

Name: Calculator Keyboard - Calku
Rating: 4.7 (490 reviews)
Author: Supagarn Pattananuchart

By: Supagarn Pattananuchart App

Calculate from your keyboard

Overview

Version:

4.0

Last updated: 2026-07-26

Ranking

#72,764 ▼ 146

Overall

Features & Capabilities

Calku turns your keyboard into a powerful calculator, letting you perform quick calculations inside any app—Messages, Notes, browser windows, and more—without switching contexts. It features a robust scientific calculator and keeps a history of results for easy reference.

Key features include Dark Mode, full iPadOS compatibility, customizable decimal points, keyboard feedback (sound and haptic), and seamless usage across apps. Say goodbye to copying and pasting; compute directly where you type.

User Growth & Download Statistics

App Education Developer Tools

By:

Supagarn Pattananuchart

Rating:

4.70

(490)

Version:

4.0 Last updated: 2026-07-26

Version code:

888875022

Creation date:

2020-12-30

Compatible devices:

Size:

3.45MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-08-05

Compare stats and ranking:

Ranking

# 72,764 ▼ 146

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

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Developed by:

Supagarn Pattananuchart

Apple Apps Store

https://apps.apple.com/us/app/calculator-keyboard-calku/id1546065778

User Reviews

Users generally praise Calculator Keyboard - Calku for being easy to use and handy for quick calculations, especially while typing in other apps or in messages. Many find it makes number input quicker than relying on standard keyboard keys and appreciate the keep-result feature. However, several reviews note stability issues, with reports of the app not working or behaving buggy at times. Some users desire features like a history button, haptic feedback, or smoother setup on iPad. Overall, it's useful when it runs reliably.

Pros

Easy to use / intuitive
Handy for quick calculations, especially inside other apps and in messages
Improves keyboard usability compared to dedicated numeric keys
Useful for quick calculations overall

Cons

Reliability issues: app sometimes not functioning or buggy

Recent reviews

Exactly what I needed!!! Calculator in my notes app, in my messages. Makes budgeting a breeze, only thing its missing is dollar signs and some formatting!