Update: Quartermile App for iOS

Created by Dietrich Limper at 08:04 on April 14, 2023

A good year ago we launched our Quartermile.app and since then it has become very popular, and not only among scooter riders. The app is aimed at anyone who has always wanted to know how fast their vehicle is on the track or how fast it accelerates. 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 motorbike. No additional receivers or antennas are needed!

New mode unlocked for the Quartermile.app

The race track can be freely selected

The lap mode is a new feature of the app's functions: the desired track on which the measurement is to be taken is driven beforehand and this is then displayed, including defined checkpoints that have to be passed. Before the "race", the number of laps can be set or the race is run in open mode without lap limits. Of course, several tracks can also be created and selected as required.

The previous modes remain, of course:

  • 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 the acceleration mode you record how fast the target speed is reached - just as you like, with a standing start or during the ride with a flying start.

This is how a measurement is taken with the 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 steady during the recording

  3. Start the run - your iPhone calibrates itself 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 analyse 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? Get back to the start, try again!

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

Verifying the efficiency of engine tuning and tuning

The app also has a nice side function: finally you can objectively verify the effectiveness of engine tuning work such as adjusting the ignition, changing the carburettor setting, changing the exhaust system, and so on. You don't see absolute performance in the Quartermile.app, but through the before/after comparison you can judge very well which engine changes have a positive effect. Almost a small pocket dynamometer.

For scooters, motorbikes, cars and other vehicles

All data is clearly presented

Quartermile.App is the ultimate app for all vehicle fans who want to take their passion for speed and performance to the road. Whether you ride a two-wheeler, a four-wheeler or even an eight-wheeler, Quartermile .App gives you the power to record your rides and measure your performance.

The free version of the app gives you all the standard modes so you can test and improve your skills. However, if you want to unlock all the features, you can make a one-time in-app purchase.

Please note, however, that you must always obey the Highway Code and other applicable laws. Quartermile.App should only be used on restricted areas to ensure everyone's safety. Always abide by the laws and rules that apply there to avoid unpleasant surprises.

Notice: We have noticed that on older devices the values differ more than on new iPhones. This is only a difference of a few metres, but we'd still like to let you know if you're 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 being developed and tested.
All updates and improvements will of course be free of charge. Try the
Quartermile.App free of charge and give us feedback in the app about your readings and what features or improvements you would like to see. Write to [email protected]. Of course, we would also be happy about a positive feedback!
We attach great importance to data protection and registration is not necessary. If you still want to do so, you can use "Login with Apple" and never have to submit your personal data. Even with the cloud backup via "Login with Apple", the login can be transferred anonymously.

Have fun and enjoy your trip!

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.