Calcvyn

Calcvyn is a scientific calculator built for people who need more than basic arithmetic. The extended numpad gives direct access to trigonometric functions (sin, cos, tan and their inverses), logarithmic operations (log, ln), and algebraic tools — all without digging through menus.

Every calculation is saved automatically to a local history log. You can scroll back through past results, search by expression or value, and tap any entry to pull it back into the input field. Nothing is deleted unless you choose to clear it.

The interface is designed to stay readable under real use: a configurable font size keeps numbers legible whether you prefer compact or large display, and the layout adapts without crowding the numpad.

All data is stored on your device. No account, no network connection, no sync — just a calculator that keeps your work.

Key features:
- Full scientific function set: sin, cos, tan, arcsin, arccos, arctan, log, ln, powers, roots, factorial
- Automatic history log saved locally
- Search and reuse past calculations
- Adjustable font size (small, medium, large)
- Works completely offline