Harry's LapTimer GrandPrix is a sports app developed by Harald Schlangmann.
Download Statistics
Harry's LapTimer GrandPrix has been downloaded 8.9 thousand times. In the last 30 days, the app was downloaded 23 times.
User Ratings
Harry's LapTimer GrandPrix is rated 4.17 out of 5 stars. The rating is based on 150 ratings.
App Information
Harry's LapTimer GrandPrix costs $22.99 to download. The APK download size is 43.23 MB. The latest version available is 25.1.0. The last update was on June 28, 2026.
Technical Requirements
Harry's LapTimer GrandPrix requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since May 2015.
Description
Harry's LapTimer is the advanced tool for car enthusiast.
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Comments on Harry's LapTimer GrandPrix for Android
★★★★★Nicholas Barbato· May 22, 2025
Great app for quality and easy to use racetrack data logging. Harry offers great support and app integrates well with OBD data, external gps units and video recording devices.
★★★★★Hans Caspary· May 1, 2017
If you are a track rat, this app is phenomenal! 🏎️🏎️🏎️
★★★★★Mike Davies· Sep 1, 2017
I love this app. It takes a little bit of time to get set up, but it's well worth it if you want to do any sort of analysis. Reading other reviews on here, it's clear that people are simply not taking this time, and have not tried other massively more expensive telemetry solutions. I can hook up an external 10Hz GPS, an OBD-II Bluetooth dongle, and a GoPro for dual video recording, and it just works! Find me something else that comes close for this price (accessories included) and I'll eat my hat. I show up at the track, mount my phone, turn on my GPS, plug in my OBD-II dongle, and fire up the GoPro, and then just load a track and go! End of session or day, I review. I learn. I go faster! It's amazing, and frequently reminds me that slow is fast as I think I've done a killer lap and then learn I'm actually 1-2s off my pace. Great job Harald, thanks for the very dedicated support, and keep up the good work.
★★☆☆☆Jezza G· Oct 12, 2016
Impenetrable interface I am very used to hi tech gadgets and software and getting the best out of them. I spent a lot of time reading all the haphazardly presented documents and trying it out before my first track day. Suffice to say that on a whole track day I wasted much of the time trying to get the software to talk to the Gopro hero 3+ and record. I only managed to record 2 x 15-min sessions the whole day. A complete waste of money, I wish I could get a refund. I will be buying the new Garmin virb, 1 easy on/off button.
★☆☆☆☆Johnny Guindi· Jul 7, 2018
On my phone's built-in GPS the app almost never detects me crossing the
start/finish line but works perfectly on other apps like Track Addict which
is completely free. Not only that but the external camera compatibility is
completely broken. Save some money and look for some other options out
there that happen to be much better, reliable and also completely free.
Google Play Rankings for Harry's LapTimer GrandPrix
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Technologies used by Harry's LapTimer GrandPrix
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