About DumberKit: Calculator
DumberKit: Calculator is a calculator and unit converter designed for Android keypad phones. It has no on-screen buttons; users enter calculations directly on the physical keypad and press OK to see the result. Touch input is disabled inside the app to avoid accidental taps while the device is in a pocket. Key combinations provide operators, parentheses, square roots, powers, percentages, sign changes, and decimal entry. The calculator follows the usual order of operations and uses exact decimal arithmetic for examples such as 0.1 plus 0.2. A paper-tape-style history can be navigated with the directional keys and clears when the app closes. The converter covers length, area, volume, mass, temperature, time, speed, pressure, and energy in both directions. A converted value can be copied or transferred into the calculator. Themes include system, light, dark, dark red, and custom colors. The app has no ads, tracking, or internet access. DumberKit is intended for keypad devices where typing with physical buttons is practical; its layout and controls are not designed around a touchscreen-first workflow.
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