Engine Sound Analyzer:RPM Calc

JETIK

2.83

201 reviews

50,000+
Downloads

Free

Estimates the engine revolutions when idling a vehicle from the exhaust sound.

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2.83 · 201 reviews · 50,000+ downloads

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Engine Sound Analyzer: RPM Calc offers a niche, DIY-friendly way to estimate engine RPM from idle exhaust sounds. By configuring engine specs, running measurements, and tuning peak detection, it helps users obtain RPM estimates when tachometers aren’t available. With 50,000+ total downloads and 700 in the last 30 days, it carries a modest rating of 2.86 from 196 users.

Pros & Cons

Estimates RPM from idle exhaust sounds, enabling tachometer-free maintenance
Configurable engine specs (strokes and cylinders) for diverse engines
Interactive peak selection and gain/threshold tuning for accuracy
Free tool tailored to DIY enthusiasts with built-in safety reminders

Lacks external sensor or OBD data integration
Limited to idle RPM estimation via microphone and lacks decibel measurement or data logging
Not a broad automotive tool; more niche compared to multi-feature RPM apps

About Engine Sound Analyzer:RPM Calc

Engine Sound Analyzer:RPM Calc is an auto & vehicles app developed by JETIK.

Download Statistics

Engine Sound Analyzer:RPM Calc has been downloaded 82 thousand times. In the last 30 days, the app was downloaded 700 times.

User Ratings

Engine Sound Analyzer:RPM Calc is rated 2.83 out of 5 stars. The rating is based on 200 ratings.

App Information

Engine Sound Analyzer:RPM Calc is FREE to download. The last update was on August 20, 2024.

Technical Requirements

Engine Sound Analyzer:RPM Calc requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play September 2021.

Description

It is an application that estimates the engine Revolutions Per Minute [RPM] from the exhaust noise of a motorcycle or car when idling.

More data about Engine Sound Analyzer:RPM Calc

Price	Free to download
Total downloads	82 thousand
Recent downloads	700
Rating	2.83 based on 200 ratings
Ranking	Not ranked
Version	N/A
APK size	N/A
Number of libraries	20
Designed for Android	6.0+
Suitable for	Everyone
Ads	Contains ads

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Alternative downloads for the Engine Sound Analyzer:RPM Calc app

Engine Sound Analyzer:RPM Calc compared with similar apps

Common keywords of similar apps

Idling Revolutions Vehicle Rotation Estimates Terminal Source Number Threshold Peak Stop Risk Move Diy Sound Engine Measurement Exhaust Application Rpm Microphone Frequency Speed Time

Keywords missing from this app

App Sounds Db Car Level Meter Measurements Data Measure Noise Calibration Real Includes Response Device Pack Audio Engines Phone Recent Save Maximum Turntable Features Cars Readings Display Set Tool Start Levels Test Accurate Automatic Free Mechanical Screen Hz Average Spectrum

Google Play Rating history and histogram

Rating history

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Downloads over time

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Engine Sound Analyzer:RPM Calc has been downloaded 82 thousand times. Over the past 30 days, it averaged 23 downloads per day.

Changelog of Engine Sound Analyzer:RPM Calc

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Developer information for JETIK

JETIK

ijetik0402@gmail.com

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Comments on Engine Sound Analyzer:RPM Calc for Android

★★★★★ Nolan McCann · Jul 19, 2022

This app exceeded my expectations. The interface is minimal and works easily, allowing the user to tune the filters and thresholds for accurate speed detection. It matched my dash tachometer within 50 rpm - the error was probably from the dash. Perfect. Thanks!

★★★★★ steven s · Jun 13, 2025

I don't leave app reviews often but this one didn't have any, and it deserved it for the utility it provided. I used it to set the governors on some small engines (think lawnmower). With the gain, filters and engine type set correctly it works awesome. It struggled a little at idle but was dead on the money at full throttle. I could tune to 3600rpm ± 20 easily. I also appreciate the ad system. Not super obtrusive, you watch ads occasionally to get more rpm readings. doesn't blast you every time

★★★★★ M Snitzer · Oct 29, 2025

Excellent app, measures RPM. Used it on a scooter and gives accurate readings. Careful setup and interpretation gives accurate results. Try and find clean engine sounds. Exhaust rattle or other extraneous sounds will give erratic measurements.

★☆☆☆☆ Andrew · Jun 2, 2025

Awful app. I think my push mower is running 11,000 rpm, even though it is set on single cylinder, 4 stroke.

★☆☆☆☆ Justin Sane Torres · Jul 13, 2025

I couldn't get it to work on any of the engines I work on.

★☆☆☆☆ Solar Bozo · Mar 18, 2023

Doesn't work right for me. Maybe I don't know how to adjust it. Set for 4 stroke, 1 cylinder, but it tells me that my gasoline powered pump is doing 7558 rpm.

★☆☆☆☆ George Zachariadis · Apr 7, 2024

Σε μονοκύλινδρο δείχνει ότι να ναι. In one-cylinder motor, and it's not accurate at all (23k rpm at idle) even I played with options.

Google Play Rankings for Engine Sound Analyzer:RPM Calc

This app is not ranked

Technologies used by Engine Sound Analyzer:RPM Calc

20 libraries

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Trust & Safety: The long description includes explicit safety warnings not to use the app while driving, to avoid heat exposure, and to securely fix the vehicle. No permissions are listed in the data.

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