Planetary Gear Calculator vs KiSoft Driver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planetary Gear Calculator
Calculate gear teeth and speed for planetary gear systems. Quickly simulate how these systems work on the fly, ideal for DIYers designing their own systems before 3D printing. Understand the formulas and components of epicyclic gear systems.
- Calculate gear teeth
- Calculate gear speed
- Simulate planetary gear systems
- Design custom gear systems
- Preview system functionality
- Understand gear formulas
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Planetary Gears Calculator calculate the gear teeth and gear speed of planetary gears system. Plus quickly simulate how the Planetary Gears works on the fly. This is a great tool, especially for DIYer who want to design their own Planetary Gears System quick and easy. Preview how these systems work before 3D print own planetary gear system. Formula for Planetary gear systems: Sun Teeth = ringTeeth - 2 * planetTeeth Planet Teeth = (ringTeeth - sunTeeth) / 2 Ring Teeth = sunTeeth + 2 * planetTeeth ST = sunTeeth PT = planetTeeth RT = ringTeeth SunSpeed = (ST+RT)/ST * PlanetCarrierSpeed - RT/ST * RingSpeed PlanetCarrierSpeed = RT/(ST+RT) * RingSpeed + ST/(ST+RT) * SunSpeed RingSpeed = (ST+RT)/RT * PlanetCarrierSpeed - ST/RT * SunSpeed Planetary gear systems, also known as epicyclic gear systems, are important components in modern engineering. Planetary gear systems are useful for speed variation and commonly found from automatic car transmissions and industrial food mixers to operating tables and solar arrays. There are four core components that make up the planetary gear systems, the ring gear, the sun gear and the planetary gears connected to the carrier. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
KiSoft Driver
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KiSoft Driver is an application for mobile phones that can be used to process deliveries. The application covers the following steps in the delivery process: - Loading the vehicle on a defined route - Driving and navigating the vehicle - Handing over a delivery to the recipient - Returning undelivered goods or empty loading equipment
Screenshots
Verdict
The clearest difference is price: KiSoft Driver at Free against Planetary Gear Calculator's $3.99. KiSoft Driver also leads on update cadence (fortnightly vs every 46 months). Planetary Gear Calculator's advantage is iOS requirement (13 vs 15.1). On ads, 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
KiSoft Driver is free to download; Planetary Gear Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Planetary Gear Calculator ships an update every 46 months, KiSoft Driver fortnightly. The most recent releases landed on October 18, 2026 and October 17, 2026 respectively.
| Parameter | Planetary Gear Calculator | KiSoft Driver |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.7 (6 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 46 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 177 MB |
| Age rating | +4 | 4+ |
| Developer | Heng Jia Liang | KNAPP AG |
In-app purchases
Planetary Gear Calculator
No in-app purchases
KiSoft Driver
No in-app purchases
Questions
Is Planetary Gear Calculator free?
Is KiSoft Driver free?
Do Planetary Gear Calculator or KiSoft Driver have ads?
Which is updated more often, Planetary Gear Calculator or KiSoft Driver?
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