Engine RPM

1.7

Real-Time Specialties

3.54

23 reviews

1,000+
Downloads

$6.99

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

Download from Google Play

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 2 thousand times. In the last 30 days, the app was downloaded 40 times.

User Ratings

Engine RPM is rated 3.54 out of 5 stars. The rating is based on 23 ratings.

App Information

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.

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 16.

Show more Show less

More data about Engine RPM

Price	$6.99
Total downloads	2 thousand
Recent downloads	40
Rating	3.54 based on 23 ratings
Ranking	Not ranked
Version	1.7
APK size	1.68 MB
Number of libraries	?
Suitable for	Everyone
Ads	NO ads

App Performance Report

Get a detailed PDF report for Engine RPM with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Alternative downloads for the Engine RPM app

Engine RPM compared with similar apps

Common keywords of similar apps

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

Keywords missing from this app

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

Google Play Rating history and histogram

Rating history

Subscribe to see the full rating timeline

Downloads over time

Subscribe to see download velocity and history

Engine RPM has been downloaded 2 thousand times. Over the past 30 days, it has been downloaded 40 times.

Changelog of Engine RPM

Show changelog

Developer information for Real-Time Specialties

Real-Time Specialties

info@tunelab-world.com

Website

Legal name:

Address:

Phone number:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on Engine RPM for Android

★★★★★ 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.

★★★★★ 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!

★☆☆☆☆ 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

2 permissions

Subscribe to see full permission and library details

Frequently asked questions about Engine RPM

Is Engine RPM free?

No. Engine RPM costs $6.99 on Google Play.

Is Engine RPM still available?

Yes. Engine RPM is on Google Play, and the last update we saw was on July 21, 2026.

Does Engine RPM contain ads?

No. Google Play does not list Engine RPM as containing ads.

How large is the Engine RPM APK?

The Engine RPM APK is 1.68 MB.

Is Engine RPM suitable for children?

Google Play rates the content of Engine RPM as suitable for everyone.

How many times has Engine RPM been downloaded?

Google Play lists 1,000+ downloads for Engine RPM.

How do people rate Engine RPM?

Engine RPM scores 3.54 out of 5 stars, from 23 ratings on Google Play.

Who made Engine RPM?

Engine RPM was developed by Real-Time Specialties. It is listed in the tools category on Google Play.

What are the best alternatives to Engine RPM?

People looking at Engine RPM also look at these tools apps: SoundTach - Engine RPM Meter, DragFX, RevHeadz Engine Sounds, RPM Speed & Wow, Car Sounds.

Top new apps Today's trending apps Apps on sale Apps other people are watching Popular Tools Apps

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps