Calculate and display RPM of an engine from the sound made by the engine.
3.54·23 reviews·1,000+ downloads
About Engine RPM
Engine RPM is a tools app developed by Real-Time Specialties.
How many times has Engine RPM been downloaded?
Engine RPM has been downloaded 2 thousand times. In the last 30 days, the app was downloaded 64 times.
What is the rating of Engine RPM?
Engine RPM is rated 3.54 out of 5 stars, based on 23 ratings.
Is Engine RPM free?
Engine RPM costs $6.99 to download. The APK download size is 1.68 MB. The latest version available is 1.7. The last update was on July 21, 2026.
What are the requirements for Engine RPM?
The app has a content rating of Everyone. The app has been available on Google Play January 2020.
Description
Please read all of the following before buying this app:
The Engine RPM app is designed to listen to the sound of an engine and from that sound, calculate and display the RPM of that engine. However the app cannot determine the RPM if the sound is inadequate, or if the app has not been properly configured for that specific engine. The sound must be clear and steady and must not have too much noise in the background. The app works the best on engines with minimal or no mufflers, such as motorcycles, lawnmowers, leaf blowers, small aircraft engines, and the like. It works better at high RPMs than at idle. For cars with modern mufflers the app will not be able to measure the RPM near idle, or if the app is listening from inside the car with the doors and windows closed. The sound inside a modern car is much too quiet for this to work.
Engine RPM is not designed to be a replacement for an operational tachometer. For safety reasons it should only be used as a diagnostic and calibration tool for things like engine tuning or checking the calibration of a regular tachometer. Engine RPM is very accurate when it is able to lock on to the sound, often to within 10 RPM or better. The app is configurable for 2-cycle and 4-cycle engines and includes a generic configuration for unusual cases, such as a reduction gear. The normal RPM range is 400 to 90,000 RPM. For more information download the operations manual from:
www.tunelab-world.com/rpm
Recent changes: This app was recompiled for performance and compatibility with Android 16.
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Perfect! As an advanced diy small engine mechanic I wanted to be able to get a rough idea of engine rpm without getting my phototach or inductive pick up out. This did exactly what it says. Tested on 3 small engines (Honda GV160 and Briggs L-head) and the initial results seemed too accurate. So I decided to pull out my clamp on rpm meter. There was always less than 2% difference and usually a 1% or less difference. All tests were between 2,600 and 3,400 rpm. It's worth double what they charge!
★★★★★Ates Gurcan· Jul 8, 2022
Finally, a tachometer that works with my model diesel engines. Quite accurate. I used it to measure RPM off of recorded videos, from live engines with good results. The looks could be improved, but the performance makes up for it. Thank you!
★★★★★Mike Daly· Feb 13, 2024
I use this to "break in" my electric motors I use for Tamika Mini 4wd racing. I previously used Giri and this app works much better and gives the user far more finite control. Highly recommend and well worth the price. Plus this can be used on my android phone where Giri is for Apple phones.
★☆☆☆☆Jared Elzea· Mar 26, 2022
Inaccurate, not user-friendly, would not purchase again
★★☆☆☆Keiffer Whiteman· Sep 30, 2020
No readout, could be user error not sure
Google Play Rankings for Engine RPM
This app is not ranked
Technologies used by Engine RPM
Engine RPM is requesting 2 permissions and we don't have library information (yet).
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