26+ iOS apps curated and reviewed
With an average user rating of 3.7★, the rpm classes category is one of the App Store's strongest. Browse all 26+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 | |
| 2 |  | Free | 3.1★ (13) | No | Yes | Oct 2026 | |
| 3 |  | Free | 2.1★ (37) | Yes | Yes | Oct 2026 | |
| 4 |  | $8.99 | 4.0★ (35) | No | No | Oct 2026 | |
| 5 |  | Free | 4.6★ (56) | Yes | No | Oct 2026 | |
| 6 |  | Free | 3.5★ (8) | No | Yes | Oct 2026 | |
| 7 |  | Free | — | No | Yes | May 2026 | |
| 8 |  | Free | 2.5★ (4) | No | No | Sep 2026 |
This tool measures the rotational speed of motors, ideal for hobbyists working with drivable model cars. It features noise removal, speed conversion, and a memo panel for recording measurements. Customizable skins add a personal touch to the user experience.
Measure rotational speed using your phone's camera or a simulated strobe light. Simply mark the rotating object and adjust the settings until it appears stationary to get an accurate RPM reading. The app also functions as a torchlight.
