Engine RPM

1.6

Real-Time Specialties

3.54

22 reviews

1,000+
Downloads

$6.99

Calculate and display RPM of an engine from the sound made by the engine.

Engine RPM is a focused audio-based RPM measurement tool that estimates engine speed by analyzing engine sounds, offering diagnostic and calibration capabilities for enthusiasts and professionals. It supports multiple engine configurations, covers a wide RPM range, and has been optimized for Android 15. Total downloads are 1,000+ with 47 in the last 30 days.

Pros & Cons

Sound-based RPM estimation from engine acoustics
Configurable for 2-cycle and 4-cycle engines
Supports unusual configurations such as reduction gear
Often within 10 RPM accuracy when locked-on

Performance limited with modern mufflers or when listening from inside a closed car.
Lacks OBD, data charts, and broader sensor integrations that some competitors offer (based on keywords seen for rivals).

About Engine RPM

Engine RPM is a tools app developed by Real-Time Specialties.

Download Statistics

Engine RPM has been downloaded 1.9 thousand times. In the last 30 days, the app was downloaded 47 times. It is ranked in the top 100 tools apps.

User Ratings

Engine RPM is rated 3.54 out of 5 stars. The rating is based on 22 ratings.

App Information

Engine RPM costs $6.99 to download. The APK download size is 1.76 MB. The latest version available is 1.6. The last update was on May 29, 2025.

Technical Requirements

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 15.

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More data about Engine RPM

Price	$6.99
Total downloads	1.9 thousand
Recent downloads	47
Rating	3.54 based on 22 ratings
Ranking	Highly ranked
Version	1.6
APK size	1.76 MB
Number of libraries	?
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the Engine RPM app

Engine RPM compared with similar apps

Common keywords of similar apps

Engines Calculate Display Designed Works Mufflers Idle Modern Inside Tachometer Calibration Cycle Rpm Engine App Sound Car

Keywords missing from this app

Sounds Torque Data Speed Real Fixd Obd Time Performance Phone Scanner Pack Includes Turntable Pro Support Recent Driving Experience Compatible Charts Sensor Fuel Tools Features Device Monitoring Exhaust Vehicles Auto Offset Emissions Adapter Cars Professional Measurements Simulator Vehicle Added Wow User Frequency Check Carista Codes

Google Play Rating history and histogram

Downloads over time

Engine RPM has been downloaded 1.9 thousand times. Over the past 30 days, it has been downloaded 47 times.

Changelog of Engine RPM

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Developer information for Real-Time Specialties

Real-Time Specialties

info@tunelab-world.com

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Comments on Engine RPM for Android

★★★★★ Josh Ely · May 6, 2024

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

Top rankings

Rank	Country	Category	List
35	Netherlands	Applications	Top Paid
127	Netherlands	Overall	Top Paid
48	Netherlands	Tools	Top Grossing
127	Finland	Tools	Top Grossing

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Ranking history in Netherlands

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Technologies used by Engine RPM

Engine RPM is requesting 2 permissions and we don't have library information (yet).
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Trust & Safety: Requires RECORD_AUDIO to analyze engine sounds and includes a license check (com.android.vending.CHECK_LICENSE); no additional sensitive permissions are listed beyond these. Users should install and use in accordance with safety guidelines for audio-based diagnostics.

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More apps

Engine RPM

Calculate and display RPM of an engine from the sound made by the engine.

Pros & Cons

About Engine RPM

Download Statistics

User Ratings

App Information

Technical Requirements

More data about Engine RPM

Alternative downloads for the Engine RPM app

Engine RPM compared with similar apps

Common keywords of similar apps

Keywords missing from this app

More from Real-Time Specialties

Google Play Rating history and histogram

Downloads over time

Changelog of Engine RPM

Developer information for Real-Time Specialties

Share Engine RPM

Comments on Engine RPM for Android

Google Play Rankings for Engine RPM

Top rankings

Ranking history in Netherlands

Technologies used by Engine RPM