Engine Sound Analyzer:RPM Calc

Installs

61k

Rating

3.8

Rating count

< 500

Category	Auto & Vehicles
Developer	池田順子
Price	Free
First release	9/7/2021 (4 years ago)
Version	1.4
In-app purchases	No
Contains ads	No
Content rating	Everyone
Package name	i.jetik.BIKERPM

View on Play Store

Core Metrics

Data Breakdown

Date	Rating Count	Average Rating	Installs	Version
6/16/2025	184	3.800	61,021	1.4
6/15/2025	184	3.800	60,942	1.4
6/14/2025	0	0.000	60,866	1.4
6/9/2025	0	0.000	60,690	1.4
6/8/2025	0	0.000	60,557	1.4
5/29/2025	0	0.000	60,483	N/A
5/28/2025	0	0.000	59,806	N/A
5/22/2025	0	0.000	59,417	N/A
5/21/2025	0	0.000	59,293	N/A
5/20/2025	0	0.000	59,247	N/A
4/24/2025	0	0.000	57,756	N/A
4/10/2025	0	0.000	57,200	N/A

Details

It is an application that estimates the engine Revolutions Per Minute [RPM] from the exhaust noise of a motorcycle or car when idling. By all means for maintenance of vehicles without tachometers such as scooters !


The idling sound includes the sound of the engine exploding, the rotation of the crankshaft / motor e.t.c., and the sound of various parts.
This application divides the sound measured by the microphone for each frequency and calculates the rotation speed [rpm] from the loudest frequency.
* Measurement results may vary due to various factors such as ambient sound, vehicle type, terminal used, and distance from the sound source. Please treat the measurement result as a reference value. In addition, it may not be possible to measure correctly depending on the model, rotation speed, and microphone performance.


• Set the number of engine strokes and cylinders
• Start measurement with “RUN” or “▷”
• Adjust the Gain and Threshold to place the peak value above the Threshold line
• Select any peak with "<" and ">"
• Stop at “□”
* Measurement will stop when the count is exhausted. You can extend the measurement time by seeing the reward advertisement or restart.


* Never use it while driving. There is a risk of accidents.
* Do not touch the heat source, keep away from it. There is a risk of burns or terminal failure.
* Securely fix the vehicle or machine so that it does not move. It may fall or move suddenly, leading to an unexpected accident.


For a long time, DIY has always liked to maintain motorcycles as a hobby.
When deciding the idling height while thinking "Is it like this?" When repairing an engine malfunction or carburetor in winter, or when adjusting the air screw, ask "Where is the number of revolutions high?" I was setting the settings while feeling. Then I had the opportunity to study the Fourier transform in another case, and if I analyze the engine sound with this, I think it can be quantified. What I thought was interesting was the reason I decided to do DIY.

I hope this app helps someone somewhere in the world.

More Apps inAuto & Vehicles

CL Theme C1

Installs: 1,425Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 12/18/2024Last change: N/A

Mileage Tracker & Vehicle Log

Installs: 518,125Score: 4.28Ratings: 7,268

Price: N/A

Version: N/AReleased: 3/31/2012Last change: N/A

CL Theme Gradient

Installs: 3,233Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 2/7/2023Last change: N/A

Auto Mechanic Mate

Installs: 294,106Score: 4.18Ratings: 2,059

Price: N/A

Version: N/AReleased: 9/1/2024Last change: N/A

CarDiag : Car Diagnostic OBD2

Installs: 208,940Score: 4.10Ratings: 437

Price: N/A

Version: N/AReleased: 5/3/2018Last change: N/A

TecDoc Catalogue

Installs: 99,216Score: 3.00Ratings: 246

Price: N/A

Version: N/AReleased: 6/1/2020Last change: N/A

Перевірка авто - ВІН і номерам

Installs: 688,848Score: 4.78Ratings: 44,538

Price: N/A

Version: N/AReleased: 8/30/2021Last change: N/A

Sentry Pro—Tesla Notifications

Installs: 9,026Score: 2.89Ratings: 157

Price: N/A

Version: N/AReleased: 8/24/2023Last change: N/A

RC Setup App & Race Log

Installs: 38,732Score: 4.00Ratings: 283

Price: N/A

Version: N/AReleased: 5/14/2020Last change: N/A

Code Moto ETM - Permis A A1 A2

Installs: 20,726Score: 3.50Ratings: 28

Price: N/A

Version: N/AReleased: 7/2/2023Last change: N/A

TeslaMirror

Installs: 11,561Score: 2.57Ratings: 228

Price: N/A

Version: N/AReleased: 12/30/2020Last change: N/A

Modèle Mag

Installs: 3,334Score: 4.33Ratings: 33

Price: N/A

Version: N/AReleased: 3/24/2015Last change: N/A

Radio Code Generator Pro

Installs: 53,129Score: 4.27Ratings: 387

Price: N/A

Version: N/AReleased: 4/15/2024Last change: N/A

TezLab

Installs: 48,492Score: 4.51Ratings: 3,817

Price: N/A

Version: N/AReleased: 2/13/2017Last change: N/A

eXtratool for BMW and ELM327

Installs: 43,818Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 1/3/2021Last change: N/A

Cartomizer - Wheels Visualizer

Installs: 527,170Score: 4.59Ratings: 8,181

Price: N/A

Version: N/AReleased: 9/28/2020Last change: N/A

Droid Dashcam - Video Recorder

Installs: 1,902,052Score: 4.36Ratings: 16,211

Price: N/A

Version: N/AReleased: 9/23/2020Last change: N/A

Eco Péage avec La Pince

Installs: 62Score: 4.60Ratings: 6

Price: N/A

Version: N/AReleased: 12/27/2023Last change: N/A

Vehicle Smart - Car Check

Installs: 1,631,949Score: 4.86Ratings: 47,655

Price: N/A

Version: N/AReleased: 7/15/2016Last change: N/A

My Car - Car Management

Installs: 459,977Score: 4.27Ratings: 4,791

Price: N/A

Version: N/AReleased: 9/23/2019Last change: N/A

Bolt for Tesla - Tasker Plugin

Installs: 4,686Score: 4.00Ratings: 235

Price: N/A

Version: N/AReleased: 8/30/2021Last change: N/A

Ride Husqvarna Motorcycles

Installs: 14,852Score: 1.60Ratings: 116

Price: N/A

Version: N/AReleased: 6/1/2021Last change: N/A

bimmer-tool Lite

Installs: 148,815Score: 4.50Ratings: 793

Price: N/A

Version: N/AReleased: 8/1/2017Last change: N/A

Radio Code Generator for Cars

Installs: 18,530Score: 4.27Ratings: 305

Price: N/A

Version: N/AReleased: 10/16/2024Last change: N/A

Rally Tripmaster

Installs: 906Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 4/3/2025Last change: N/A

Incode to Outcode for Ford/GM

Installs: 95,499Score: 1.80Ratings: 385

Price: N/A

Version: N/AReleased: 7/14/2017Last change: N/A

Testi Driving Cancellations UK

Installs: 692,124Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 3/20/2019Last change: N/A

inCarDoc Pro | OBD2

Installs: 326,123Score: 3.71Ratings: 10,480

Price: N/A

Version: N/AReleased: 3/5/2013Last change: N/A

PHEV Watchdog

Installs: 3,366Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 1/6/2021Last change: N/A

Car service tracker

Installs: 235,255Score: 3.78Ratings: 1,000

Price: N/A

Version: N/AReleased: 3/11/2021Last change: N/A

RIDERPASS : Les circuits moto

Installs: 3,430Score: 3.18Ratings: 11

Price: N/A

Version: N/AReleased: 12/5/2023Last change: N/A

Carmin

Installs: 2,293,558Score: 4.38Ratings: 21,586

Price: N/A

Version: N/AReleased: 4/21/2019Last change: N/A

Dacia Radio Code Generator

Installs: 78,746Score: 4.10Ratings: 693

Price: N/A

Version: N/AReleased: 12/14/2023Last change: N/A

RADIO CODE for DELPHI FAMAR

Installs: 413Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 11/7/2018Last change: N/A

Driving Instructor-Theory Test

Installs: 4,436,020Score: 4.33Ratings: 4,016

Price: N/A

Version: N/AReleased: 9/12/2023Last change: N/A

Superlaps

Installs: 2,328Score: 4.78Ratings: 39

Price: N/A

Version: N/AReleased: 5/16/2024Last change: N/A

Go back to the Home page