Calcvorn

Calcvorn is a scientific calculator built for users who need more than basic arithmetic. The extended numpad gives quick access to trigonometric functions — sine, cosine, tangent and their inverses — alongside logarithmic operations, square roots, powers, and constants like pi and Euler's number.

Every expression you evaluate is automatically recorded in a scrollable history log. You can scroll back through previous calculations, tap any result to reuse it, and keep track of a full session without manually writing anything down.

There is no account to create, no data sent anywhere, and no internet connection required. Everything is stored locally on the device.

The interface is designed around clarity. The numpad is laid out to keep common operations close at hand while advanced functions remain accessible without cluttering the primary view. Calcvorn handles operator precedence correctly and shows the full expression before evaluation so you can verify input before committing.

Works fully offline. No ads, no purchases, no sign-in.