Mechanical Calculator
If you like seeing every step, this app keeps a receipt-style paper tape
for calculations, then adds built-in tools for conversions, interest
scenarios, and splitting a bill.
- Paper tape memory that records entries and results
- Calculator with receipt-style tape display
- Bill Splitter tool with even/uneven distribution
- Unit Converter for common measurements
- Interest Calculator with multiple calculation modes
- Random Generator for number sequences
- Exports for calculator and tool results in TXT, CSV, PNG, JPG, and PDF
- Optional printing effects and landscape keypad controls
Columns Classic
When you want a quick arcade-style brain break, Columns Classic gives you fast
falling-block action, chain combos, and plenty of high-score energy.
- 4 difficulty levels and 3 grid sizes
- Horizontal, vertical, and diagonal matches
- Gesture controls plus optional on-screen buttons
- Separate top-20 leaderboards by mode and grid size
Chess Timer
For over-the-board games, this chess clock keeps turns clear, setup easy, and
the whole session smoother for both players.
- Fast turn handoff for two-player over-the-board games
- Preset time controls plus custom hours, minutes, and seconds
- Pause, resume, restart, and optional auto-pause
- Theme color picker, sounds, and optional landscape mode
