QuantumCalc troch Yasir Shafique

A beautiful, fast and private offline calculator with keyboard support, percentage calculations, light/dark mode, and a clean modern interface.

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QuantumCalc is a beautiful, fast, and privacy-focused calculator designed for everyday calculations directly inside Firefox.

➕ Basic arithmetic: addition, subtraction, multiplication, and division
% Percentage calculations
± Positive/negative number toggle
⌫ Quick backspace and clear controls
⌨ Full keyboard support
🌙 Dark mode
☀ Light mode
⚡ Fast and lightweight
🔒 Completely offline
🛡 No tracking or data collection
🚫 No external website access or unnecessary permissions

QuantumCalc does not require an account, internet connection, additional software, or paid services. Your calculations remain on your device.

Built for users who want a simple, attractive, and distraction-free calculator available directly from the Firefox toolbar.

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