ISS POS Mobile vs GearCalc Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISS POS Mobile
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Mit dieser App kann jeder Kunde von ISS POS seine innere Arbeit wie Artikelpflege , Preis änderungen und alle Fähigkeiten, die ISS POS Serversoftware anbeitet, einfach und schnell ausführen.t
GearCalc Pro
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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.
Screenshots
Verdict
The clearest difference is ads: ISS POS Mobile at none against GearCalc Pro's shown. ISS POS Mobile also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ISS POS Mobile ships an update every 2 weeks, GearCalc Pro every 3 months. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.
| Parameter | ISS POS Mobile | GearCalc Pro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 38 MB | 8 MB |
| Age rating | 17+ | 4+ |
| Developer | Windsoft Tech GmbH | Sui Fai Law |
In-app purchases
ISS POS Mobile
No in-app purchases
GearCalc Pro
No in-app purchases
Questions
Is ISS POS Mobile free?
Is GearCalc Pro free?
Do ISS POS Mobile or GearCalc Pro have ads?
Which is updated more often, ISS POS Mobile or GearCalc Pro?
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