AppMarketSpy › Utilities › Engine RPM
★ 4.03average rating
35ratings
+0new ratings, last 7 days
—not in top charts now
Ratings breakdown
| ★★★★★ | 69% | |
| ★★★★ | 6% | |
| ★★★ | 3% | |
| ★★ | 6% | |
| ★ | 17% |
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App info
- Developer
- Real-Time Specialties
- Category
- Utilities, Productivity
- Released
- Dec 2, 2009
- Version
- 2.6.1 (Oct 2, 2026)
- Price
- $8.99
- Size
- 3.1 MB
- Requires
- iOS 13.0
- Age rating
- 4+
- Languages
- English
In-app purchases
noneCurrent prices, App Store US.
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About Engine RPM
Measure the RPM of an engine by analyzing the sound it makes. Engine RPM listens to the sound of a running engine and uses advanced signal processing algorithms to extract the frequency of that sound and calculate the RPM. This app is primarily for setup and diagnostics of engines. After setting the the number of cylinders and whether the engine is a 2-stroke or 4-stroke engine, the app can work with any internal combustion engine, from diesel tractors to aircraft engines to motorcycles to chainsaws. To use the app you must set an expected RPM range to guide the analysis algorithms to the correct RPM. A real-time graph of the autocorrelation graph is displayed to help in troubleshooting and adjusting the expected RPM range. The analysis requires a clear sound from the engine without excessive interference from extraneous sounds. Do not expect to read the RPM of an engine while other…
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