Measure your vehicle's acceleration and braking performance with this app. It displays real-time gauges and graphs, stores results for analysis, and offers various test modes. Upgrade to Pro for advanced features like EDR and Crash modes.
1.9
February 1, 2026
New version to comply with recent age rating requirements.
$2.99
iAccel Pro
Adds 0 - 80 mph, 0 - 130 km/h, 0 - ¼ mile, 0 - 400 m acceleration tests Adds Event Data Recorder and Crash test modes Adds Calibration Check procedure Increases maximum Continuous test time from 30 seconds to 5 minutes Removes all advertising from iAccel
MoreiAccel is available for iPhone and iPod Touch devices. You can download it from the App Store. The app is free to download and use, with optional in-app purchases for Pro features.
The free version of iAccel allows for basic acceleration and braking tests, including 0-30 mph and 0-60 mph. The Pro version offers additional tests like standing ¼ mile, 0-80 mph, and EDR/Crash modes.
The app uses your device's accelerometers to measure performance. It includes a calibration check feature in the Pro version to verify accelerometer accuracy. For best results, mount your iPhone with its long edge perpendicular to the direction of travel.
Yes, iAccel can be used for performance testing without an internet connection. The app primarily relies on your device's sensors for measurements and stores data locally.
Continuous recording mode logs data to a CSV file. In the free version, this is limited to 20 seconds, while the Pro version allows up to 5 minutes. The app will automatically overwrite older data if the limit is exceeded, unless AutoStop is enabled.
iAccel has an age rating of 4+. This indicates it is suitable for a wide range of users, including children, and does not contain mature content.
The latest version of iAccel is 1.9, last updated on February 1, 2026. While this indicates a recent update, the release date of the app was September 10, 2015, suggesting a history of ongoing development.
No, iAccel does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced features.
