Calculator Keyboard - Calkey

Calculate without switching apps. A calculator built right into your keyboard — works everywhere. Split bills, calculate tips, and insert results instantly. Tired of switching apps back and forth? Calkey is a calculator built right into your keyboard. Whether you're in Messages, Notes, Safari, or any other app, you can calculate on the spot—without ever leaving your keyboard. Results insert with a single tap. ■ Perfect for: • Splitting the bill 　Calculate "125 ÷ 4" right in your group chat and send it instantly. • Shopping abroad 　Convert currency and paste the result straight into your notes. • Quick calculations 　No more hunting for the calculator app and switching away from what you're doing. ■ Key Features • Built into your keyboard 　Access it anytime, anywhere. • One-tap input 　Tap any result to insert it as text. • Formula input 　Insert the full equation too. Show your work with formats like "1000 + 500 = 1500." • Customizable 　Light/Dark mode support and adjustable keyboard height. • Works offline 　Your calculations stay private—nothing is sent externally. Make your iPhone keyboard smarter. Download Calkey now and experience effortless calculations.