◆ CalculatorOS

Calculators

Every CalculatorOS model in one place.

Explore each generation: how it boots, charges, idles, and updates.

Calculator I

Runs CalculatorOS One

The original concept. Clean layout, OLED-style display, and a simple boot intro. Perfect as the base “hardware” for your OS experiments.

  • Single-line display
  • Basic operations only
  • Instant-on experience
See Starter pricing →
I CalculatorOS One 12 + 7

Calculator II

Runs CalculatorOS Two

A more complete experience with expression line, smoother animations, and a built-in unit converter panel.

  • Expression + result lines
  • Unit conversion modal
  • Refined Apple-style shell
See Pro pricing →
II CalculatorOS Two 3.14 × 2

Calculator III

Runs CalculatorOS Three

The most advanced model: fake version checks, long update flows, battery and charging, and idle OLED animations.

  • Versioned update system (v2 → v3)
  • Battery drain + charging simulation
  • Idle canvas animation when inactive
See Ultra pricing →
III Updating… 73% CalculatorOS Three

Calculator IIII

Runs CalculatorOS Four

The next step in the lineup: a larger LED-style panel, more system logic, and a smarter OS that can handle history, modes and future features.

  • Bigger screen area with LED look instead of OLED glow
  • CalculatorOS Four with improved update and recovery system
  • Room for multiple modes: standard, scientific, converter and more
  • Designed as the “flagship” for upcoming experiments
See Infinity pricing →
IIII CalculatorOS Four 128 ÷ 3.14 LED panel • Bigger screen

Calculator V

Runs CalculatorOS Five

The next step of the future..

  • Bigger LED display with higher clarity
  • CalculatorOS Five with advanced update system
  • Smarter memory, history and modes
  • AI-powered calculation assistant
  • Future-ready architecture
  • More promised soon..
See Beyond pricing →
V CalculatorOS Five 425 x 6205 LED panel • Bigger screen • Smarter AI