Features & Capabilities

Engineering-grade gear ratio calculator with real-time 3D simulation, 18 motors, 8 languages.

GearCalc Pro is the most professional gear ratio calculator and 3D simulator for hobbyists, makers, and engineers working with motorized projects.

WHAT IT DOES

  • Calculate exact gear ratios for any motor + target speed/torque
  • Auto-suggest optimal gear teeth combinations across 1-6 stages
  • Real-time 3D visualization of compound gear trains with proper meshing
  • Simulate gear rotation at adjustable input RPM with live output display
  • Battery life estimation across 11 battery types
  • Reverse motor finder - given target RPM/torque, find the best motor

MOTOR LIBRARY (18 models)

  • Ultra Micro: N10
  • Micro: N20, N30, GA12-N20 gearmotor
  • Small: TT, DC 130/FA-130, DC 180, DC 260, DC 280
  • Medium: DC 380, RS-540, RS-545, RS-550
  • Large: RS-775, RS-895
  • BLDC: 2208 drone motor
  • Stepper: NEMA 14, NEMA 17, NEMA 23
  • Servo: SG90, MG996R
  • Custom motor input - add your own specs

ENGINEERING FEATURES

  • Standard gear theory: D = teeth x module
  • Per-stage efficiency (Spur, Helical, Worm, Bevel, Planetary)
  • Gear pair recommendations from 21 standard tooth counts (8T to 120T)
  • Worm gear support with 1/2/4-start configurations
  • Standard ISO modules (0.3 to 4.0)
  • Motor dimension diagrams with shaft, bore, and mounting specs
  • Save/load configurations

3D VISUALIZATION

  • Real PBR-rendered gears with metallic shading
  • Color-coded stage badges
  • Auto-fit camera, free 3D rotation
  • Reset view to recenter
  • Start/stop animation with physics-correct rotation

8 LANGUAGES Traditional Chinese, English, Simplified Chinese, Japanese, Korean, Spanish, French, German.

EXPORT

  • Generate spec sheet image
  • Copy text spec to clipboard
  • Share via standard iOS share sheet

Whether you're designing a robot, toy, RC car, 3D printer, or CNC machine, GearCalc Pro gives you the math, the visualization, and the engineering data in one beautifully designed app.

User Growth & Download Statistics

App
By:
Sui Fai Law
Version:
1.0 Last updated: 2026-05-09
Version code:
885437783
Creation date:
2026-05-08
Compatible devices:
Size:
7.57MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-10
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Sui Fai Law
Apple Apps Store
https://apps.apple.com/br/app/gearcalc-pro/id6767600060?l=en-GB
Website:
https://www.neuralworkshk.com

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