Acceleration tests
Measure 0-60, 0-100, 0-200 km/h, quarter mile, and more intervals with high-precision GPS.
Measure your car's acceleration with GPS precision
Track 0-100 km/h, 100-200 km/h, 1/4 mile and more — right from your iPhone or iPad. No external hardware needed.
Free to download · Available worldwide
Built for drivers and enthusiasts
Rolling start measurements
Track runs like 50-150 km/h and 100-200 km/h without needing to start from a complete stop.
Braking performance
Measure 100-0 km/h braking runs and review your stopping performance after each test.
GPS speedometer
A clean, accurate speedometer that doesn't depend on your car's odometer.
Multi-car garage
Save your cars and compare runs across them — from daily driver to weekend track car.
Run history
Every measurement is saved automatically. Review your progress and beat your records.
Share results
Share your best runs with friends or post them to social media in one tap.
Privacy-first
Your location data never leaves your device. We don't sell or share any personal data.
How it works
- 1Place your iPhone somewhere safe in the car, or hand it to a passenger.
- 2Open the Analysis tab — no taps needed. Logging starts automatically as soon as the car begins to move.
- 3Drive responsibly on a safe, closed test area. The app measures every interval in real time.
- 4Review your results, save the run to your garage, and share it.
⚠ Use Launchmeter only on closed test facilities. Never operate a vehicle while using the app — a passenger should always handle the device. Always obey traffic laws.
FAQ
What can Launchmeter measure?
Launchmeter measures 0-100 km/h, 100-200 km/h, 1/4 mile, rolling acceleration intervals such as 50-150 km/h, braking runs, GPS speed, distance, and slope.
Do I need external hardware?
No. Launchmeter uses your iPhone or iPad GPS and motion sensors, so you can record car performance without a separate OBD adapter or GPS device.
How do rolling start measurements work?
Open the Analysis tab and drive. For a 50-150 km/h run, recording starts automatically when your speed reaches 50 km/h and ends at 150 km/h.
Where should I use Launchmeter?
Use Launchmeter only where performance testing is safe and legal, such as a closed test facility. A passenger should handle the phone.
Get Launchmeter
Available on iPhone and iPad. iOS 17 or later.