Sariel's Gear Calculator

4.6
304 reviews
50K+
Downloads
Content rating
Everyone
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About this app

This tool is aimed at all AFOLs. Use it to calculate final ratio of up to 10 pairs of gears, then select the desired type and number of motors to see the theoretical output (speed and torque). Includes 15 sizes of gear wheels and 26 various types of motors! Also included: a planetary ratio calculator, gear coupler for finding available gear combinations at given axle spacing and Gearcyclopaedia featuring detailed info on 38 types of gears. NEW: Combinations finder tab where you can enter a desired gear ratio and the numbers of pairs of gears you want to use, and the app will calculate the solution (exact or the closest possible).
Updated on
Mar 10, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.6
289 reviews
Jarhead
November 5, 2022
Works well on my old Note 8. I'm not a machinist or engineer or anything. I just thought I'd check it out. Assuming all the nbrs are correct, this app appears to do all the work for you so that you can build whatever it is that you want to build. No ads. For those who've seen my ratings b4 when I see no ads, then the optional question asked afterwards, "r8 ue experience for ads shown inside the app" will always be 5☆'s! 😁
1 person found this review helpful
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A Google user
December 6, 2019
Great for calculating complex gear trains. You can now choose gears from silhouette images. There is no easy way to remove a gear combination (yet) aside from setting it to "select" on both sides. Setting a gear combination back to ? : ? does not reset the gear ratio for that combination to 1:1 so it doesn't work as a way to remove a pair of gears
21 people found this review helpful
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Graham Murray
May 5, 2020
As a Hobby Builder, this app is super easy to use and a must for anybody playing with motorized designs. After installation & in 30 seconds or less, i had my current gear ratio, with the ability to find the best gear setup. I love the Speed and Torque Ratio at the bottom. Your Gear Coupler Section blew me away. Keep pumping out the awesome!
13 people found this review helpful
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What's new

Added 60-teeth annular ring from the UCS AT-AT set to planetary gearing calculator