apps / 363556704
Harry's LapTimer Grand Prix
Harald Schlangmann · Sports · $27.99 · US storefront
- rating
- 4.0 ★
- ratings
- 80
- updated
- Jun 27, 2026
- released
- Apr 2, 2010
v25.1.0
visible word pool · 5 words
title 27/30 chars · subtitle unavailable
App Store search indexes the title and subtitle together with the hidden 100-character keyword field as one combined pool: any phrase assembled from those words can rank. These are the words of Harry's LapTimer Grand Prix's pool that are public — the keyword field is not exposed by any API.
from the listing
Harry's LapTimer is the advanced tool for car enthusiast. It records all types of sensor data provided by your iPhone/iPod/iPad (or external sensors), combines them, and makes them available to optimize your drive. Over time, you will get insights on your car and in your driving, not known before. LapTimer offers more than 1300 predefined tracks world wide. With its assistants, it is extremely easy to setup - just click your track and drive. It fully automates your lap timing…
latest US reviews
★★★★★
Garbage
1) Doesn’t work with GoPro 2) only uses the RaceBox GPS (no accelerometer 3) even when it says the RaceBox GPS is connected, it won’t use it This is the first time I’ve ever wanted a refund for an app; wish me luck in obtaining it
— B-Dizzle314
★★★★★
Absolute junk app
This is the most money I’ve ever spent for an app to be such crap it doesn’t function anything like how it was described. I spent an entire track day trying to calibrate it and wasted more time than it’s worth. It told me I did a 45 min lap time around COTA for one of my…
— Jrockitstunts
★★★★★
Very comprehensive but adding video…?
This app is great, comprehensive and analytical. I wanted to use it to insert telemetry into a video and it is NOT intuitive nor remotely easy as RaceChrono Pro and it was difficult! I probably won’t be using.
— M3clubracer
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