SoundTach
Measure Engine RPM
From Sound
No tools needed. Simply point your phone at the exhaust and see accurate RPM readings in seconds.
Available on iOS and Android
How It Works
SoundTach uses advanced audio analysis to detect engine RPM from exhaust sound. No OBD adapter, wires, or manual calibration needed.
Select cylinders and stroke type
Point your phone at the exhaust
See real-time RPM readings
Key Features
Automatic RPM Detection
Works with 1-12 cylinder engines
2-Stroke & 4-Stroke Support
Motorcycles, dirt bikes, ATVs, scooters
No Manual Configuration
Automatic gain and filtering
Real-Time RPM Display
Smooth, accurate readings
Signal Quality Indicator
Know when to move closer or back
Clean, Professional Interface
Easy to read outdoors
Works With Any Engine
From motorcycles to chainsaws, SoundTach works with any 2-stroke or 4-stroke engine with 1-12 cylinders.
Motorcycles
Street, sport & cruiser
Dirt Bikes
Motocross & trail
Scooters
50cc to 250cc
ATVs & UTVs
Quads & side-by-sides
Lawn Mowers
Push & riding mowers
Chainsaws
Gas-powered saws
Generators
Portable & standby
Go-Karts
Racing & recreational
+ Any engine with audible exhaust
Perfect For
Motorcycle Tuning
Set idle RPM precisely without expensive equipment. Perfect for carbureted bikes like vintage motorcycles, cafe racers, and classics.
Mechanic Tools
Add SoundTach to your diagnostic toolkit. Great for quick RPM checks on customer vehicles.
Small Engine Repair
Tune lawn equipment, chainsaws, and generators to manufacturer specifications.
DIY Maintenance
Save money by tuning your own equipment. No need to buy dedicated tachometer gauges.
Why SoundTach?
SoundTach works automatically. No gain adjustments, no filter configuration, no threshold tuning. Just point and measure.
Download Now
Get SoundTach on your phone and start measuring RPM today.