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SoundTach

SoundTach

RPM from Engine Sound

5 ratings
5 reviews
🔧 Utilities
Free
In-App Purchases

Details

  • Released
  • Updated
  • December 16, 2025
  • April 29, 2026

Features

Developer

XCARAB INC
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🧾$4.99
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⭐5
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📝4+ tags
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❓8 answered
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📦~ in 1 week
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About

Measure engine RPM from sound without any tools. Simply point your phone at the exhaust of various engines like motorcycles, cars, or lawn mowers to get accurate, real-time readings. The app automatically filters background noise and indicates signal quality for reliable measurements.

✓Automatic RPM detection from sound
✓Supports 2-stroke and 4-stroke engines
✓No manual configuration required
✓Real-time RPM display
✓Signal quality indicator
✓Professional and easy-to-read interface
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What's New in SoundTach

1.3.6

April 29, 2026

Includes bug fixes. The RPM display should now fit screens that have display zoom enabled.

1

In-App Purchases

$4.99

Full Access - Pay Once

No subscription—measure RPM on any engine.

User reviews

Most RecentHighest RatedLowest Rated

Cost Disclosure??

The app owner will be happy to tell you everything you want to know about this app, including that it is free for seven days, but there is zero information to be found regarding the cost buy the app. I honestly don’t understand why this information can’t be more transparent.
Why are these things thus?Why are these things thus?

App

I mean… it work mebey not super duper accurate but still nice to use you don’t have to pay too so that cool
Bambola2000Bambola2000

Simple and it works

Helped me to troubleshoot small engine.

Shows accurate value
Mikes FurnaceMikes Furnace

So easy to use and it works

This is a great app that just simply works. I have used the Engine RPM app and it’s finicky with the settings. With This app you just tell it what kind of engine you have for your situation and it figures out the settings. This app compared within 1% of the rpm shown in my trail tech tachometer on my motorcycle
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SR71JSR71J

Amazing

Simple and flexible for all kinds of engines. It was a big lifesaver time tune my Suzuki DR650. And I used other cars/motorcycles with different engine types to compare this app with the real tachometers, the app is right on!
tzenhousetzenhouse

FAQ

How does SoundTach measure engine RPM?

SoundTach uses advanced audio analysis to detect engine RPM directly from the sound of the exhaust. It automatically filters background noise and verifies harmonics to provide accurate readings without any physical tools or adapters.

What types of engines does SoundTach support?

SoundTach supports a wide variety of engines including motorcycles, dirt bikes, ATVs, scooters, lawn mowers, chainsaws, generators, and even small aircraft engines.

Does SoundTach require any manual calibration?

No, SoundTach is designed for automatic operation. It handles gain normalization, noise filtering, and smoothing without requiring any manual configuration from the user.

How accurate are the RPM readings from SoundTach?

The app provides real-time, smooth, and accurate RPM readings. It also includes a signal quality indicator to help users ensure they are getting the best possible measurement.

Is SoundTach available on all devices?

Based on the information, SoundTach is available for iPhone and iPod devices. It is not specified if an Android version is available.

How often is SoundTach updated?

The latest version of SoundTach is 1.3.6, and it was last updated on April 29, 2026. This indicates a relatively active development cycle.

What is the user sentiment for SoundTach?

SoundTach has a rating of 4.2 stars from 5 ratings, suggesting generally positive user feedback on its functionality and ease of use.

Does SoundTach have ads?

No, the application data indicates that SoundTach does not contain advertisements.