Quartermile.app for iOS

Created by Dietrich Limper at 15:02 on February 1, 2022

How fast is your vehicle over a quarter mile or from 0 to 100 km/h? Or over a self-determined distance or, or, or ... with the Quartermile.App you can answer these questions and more! The Quartermile.App uses the sensors and GPS of your iPhone to give you a precise picture of the performance of your vehicle - whether it's a scooter, car or motorcycle. No additional receivers or antennas are needed!

Thanks to a clear design and an automatic start, you can fully concentrate on the road and still have all the important values of your ride in view.

And this is how simple our Quartermile App works

In the Quartermile.App you can currently choose between two modes:

  • In Drag Race mode, you can test how long it takes you to cover a set distance and what the top speed is at the finish.
  • In Acceleration mode you record how fast the target speed is reached - just as you like, with a standing start or while driving with a flying start.

You want to record several laps on a race track? Be patient, it's already in the works! Also, more features are planned: social sharing, high scores, clubs, charts and more! If the app for iOS proves successful and enjoys great popularity, there is nothing to stop it being implemented for Android devices.

This is how easy you take a measurement with Quartermile.App in drag race mode:

  1. Drive to the start line
  2. Position your iPhone for maximum GPS reception and in a place where it will be safe and quiet while recording
  3. Start the run - your iPhone will calibrate automatically
  4. Recording starts automatically with the first acceleration of your vehicle
  5. Your position, current speed and progress are clearly displayed
  6. Complete your run by reaching the specified distance

Now you can analyze your performance using various statistics such as the G-forces, your maximum and average speed as well as wind and weather.

Not satisfied with your ride? Back to the start, try again!

ATTENTION: Please note that an iPhone alone cannot replace expensive measurement equipment from motorsport. With the Quartermile.App we want to give you a simple and comparable tool, which you can use always and as simple as possible. And the basic functions are free of charge in every mode!

Verify the efficiency of engine tuning and performance

The app has a nice side feature: finally you can objectively check the effectiveness of engine tuning work such as adjusting the ignition, changing the carburetor setting, different exhaust system, etc.. You don't see absolute performance in the Quartermile app but by comparing before and after you can judge very well which engine changes have a positive effect. Almost a small pocket dynamometer.

For scooter, motorcycle, car and other vehicles

Quartermile.App is made to support a wide range of vehicles - whether they have two, four or eight wheels. As long as it drives and your iPhone has GPS reception, you can use Quartermile.App for recording.

With the free version, you can test all modes with default values! With our one-time in-app purchase you unlock all other values.

Please remember to obey the traffic laws and other applicable laws and to use the Quartermile.App only on restricted areas, in compliance with the laws and rules applicable there.

Note: We have noticed that on older devices the values differ more than on new iPhones. This is only a difference of a few meters, but we would still like to inform you about it, should you be surprised. We are also working on improvements in data accuracy by addressing all of the iPhone's sensors. This data is filtered and constantly improved. Other techniques using OBD2 and external GPS antennas are under development and testing.
All updates and improvements will of course be free of charge. Just try the Quartermile.App for free and give us feedback in the app about your measurements and what features or improvements you would like to see. Write to [email protected]. Of course, we would also appreciate a positive review!
We place great emphasis on data protection and registration is not necessary. If you still want to do this, you can use "Login with Apple" and never have to transmit your personal data. Even with the cloud backup via "Login with Apple", the login can be transferred anonymously.

Have fun and enjoy your ride!

Dietrich Limper
Dietrich Limper

Dietrich Limper works as an editor for SIP Scootershop and also writes for local and national publications. When he's not geocaching, he enjoys the amazing antics of Bayer Leverkusen.