Calcivex

Calcivex is a scientific calculator built for users who need more than basic arithmetic. The extended numpad covers trigonometric functions (sin, cos, tan and their inverses), logarithms (natural and base-10), exponents, square roots, and factorials — all accessible without switching between modes or hunting through menus.

Every expression you evaluate is automatically saved to a scrollable history log. Tap any past result to load it back into the input field and continue working from there. The history persists between sessions so nothing gets lost when you close the app.

The interface is designed around clarity. Large function keys, a dedicated display row for the current expression, and a result preview below it keep the workflow straightforward. No hidden panels, no mode toggles — everything is on screen.

All data is stored locally on your device. No account required, no network connection needed, no data sent anywhere. Works fully offline from the moment you install it.