AdaptiveCalc is a simple and free calculator with several enhancements compared to common calculator apps:

- An innovative adaptive user interface hides buttons which are currently not needed. This saves some space on the screen and prevents wrong input. The feature is especially useful when working with parentheses.

- Results are displayed immediately. No need for pressing an "equals" / "=" button.

- Memory function: touch the result to store the current result. Press the "M" button to remember the value.

- Large number of mathematical functions: cos, acos, cosh, sin, asin, sinh, tan, atan, tanh, sqrt, cbrt, ln, exp, floor, ceil, abs, modulo operator (%).

- Constants: e (Euler's number), pi (ratio of a circle's circumference to its diameter), phi (golden ratio), √2 (square root of two).

The app is free. The app shows no ads. The app requires no permissions.