Harry's LapTimer Petrolhead

Name: Harry's LapTimer Petrolhead
Price: 19.99 USD
Rating: 3.8 (152 reviews)
Author: Harald Schlangmann

By: Harald Schlangmann

Sports

Features & Capabilities

Harry's LapTimer Petrolhead is an advanced lap-timing tool for car enthusiasts. It records sensor data from iPhone devices (and compatible external sensors), merges them, and delivers insights to optimize your driving. With GPS-based timing across 1,300+ tracks and automated track setup, you get precise results and analytics that reveal performance patterns you didn’t know existed.

It also offers in-car video overlays and designed views to analyze every inch of your drive, plus online racing features like a Hall of Fame and real-time sector timing to compare with friends. The product ships in three editions—Rookie, Petrolhead, and Grand Prix—providing increasing levels of video, sensor, and analytics capabilities. Start simple with just an iPhone and expand with external GPS/OBD II sensors later. For full details and supported configurations, visit the official LapTimer site and join the user community.

User Growth & Download Statistics

App Sports Analytics Data Navigation & Mapping

By:

Harald Schlangmann

Rating:

3.80

(152)

Version:

25.1.0 Last updated: 2026-06-25

Version code:

887297054

Creation date:

2009-11-24

Compatible devices:

Size:

80.09MB

Price:

19.99

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-27

Compare stats and ranking:

Ranking

# 138,815 ▼ 498

Other rankings

#22 in Sports (Paid) ▲

Other platforms

Harry's LapTimer Petrolhead (v25.0.2)

16,349 3.82

(331)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Harald Schlangmann

Apple Apps Store

https://apps.apple.com/us/app/harrys-laptimer-petrolhead/id338257907

Website:

http://www.gps-laptimer.de

User Reviews

Harry's LapTimer offers a feature-packed toolset for track days with video overlays, GPS/OBD data, and multi-camera support, backed by active developer/community support. It is praised for depth, flexibility, and value, but is hampered by stability issues, inconsistent video export/ playback, track coverage gaps, Bluetooth/GPS connectivity problems, and refund/support friction. Overall, it remains a strong option for enthusiasts who can manage its reliability and coverage limitations.

Pros

Powerful data logging and video overlay with multi-camera support (iPhone, GoPro) and reference lap comparisons.
Flexible hardware compatibility including external GPS, BLE OBD adapters, and various sensors.
Strong developer/community support with active forums, extensive documentation, and regular feature updates.
Accurate timer and rich telemetry that helps improve lap times and is considered great value for the price.
Reliable performance at many tracks and evolving features, making it one of the best lap timer solutions.

Cons

Stability issues: frequent crashes, freezes, and screen lockups during or after sessions.
Video export and playback problems: overlay workflows and saved videos can fail or be unviewable until reboot.
Track coverage gaps and compatibility problems: not all tracks are supported, some require another app, and some tracks aren’t recognized.
Connectivity and GPS accuracy problems: Bluetooth connections to devices can be spotty and GPS data can be off on certain tracks.
Refund and support friction: difficulty obtaining refunds and inconsistent support responses in some cases.

Recent reviews

Lots of weird buttons that is unclear what it does to your videos. Pushed something trying to export and all of them disappeared. Not able to sort by best time, only by date/time. Records upside down and can’t automatically set to upright position, but all screen info is upright.

by iK*****, 2026-05-17

I bought this many years ago and used to work great. but over the years Harry has added so many features that the app has become extremely unreliable. He really needs to restart and build an app that is much simpler and easy to use, and reliable. The biggest problem I have right now is that when I record a video, it is extremely difficult to extract the video including overlay data onto my iPhone. I have to first narrow things down to a specific lap, and then when I try to export that to my iPhone it fails 9/10 times. Even when it succeeds, it takes 5-10 minutes to export each lap video. Far too painful.

by Jg*****, 2026-05-13

I can overlook Bluetooth connectivity issues for the data and overlay, although I purchased and use recommended gps and OBD2 devices. Those are spotty at best. The app does fine of data logging and the video looks good. But when you overly and export a video the app basically won’t do anymore video viewing or exporting. Then in the photos app you can’t view the video that was exported (or any other video in your library) until you reboot the phone. The app did this with my iPhone 15 Pro and now the same with my brand new 16 Pro. I’ve deleted the app and moved on. Payed a bit more for the Garmin Catalyst but it’s much better. Harry’s lap timer is nothing but headaches.