# Harry's LapTimer Petrolhead vs GLP

The clearest difference is in-app purchases: GLP at none against Harry's LapTimer Petrolhead's 1. GLP also leads on price ($14.99 vs $19.99). Harry's LapTimer Petrolhead's advantage is review sentiment (77% vs 44%) and device support (4 vs 2). On update cadence, ads and iOS requirement there is nothing between them.

Harry's LapTimer Petrolhead costs $19.99 and GLP $14.99 up front. Harry's LapTimer Petrolhead sells 1 one-off in-app purchase. GLP asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Harry's LapTimer Petrolhead | GLP |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | **[3.8 (152 ratings)](https://appshunter.io/ios/app/harrys-laptimer-petrolhead/id338257907/reviews)** | — |
| Number of ratings | **152** | — |
| Positive reviews | **77.0% of reviews** | 44.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 80 MB | 1 MB |
| Requires iOS | **12.0** | 13.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Harald Schlangmann](https://appshunter.io/developer/307688601) | [Dominik Reichert](https://appshunter.io/developer/710755006) |

## What reviewers say

### Harry's LapTimer Petrolhead

[App page](https://appshunter.io/ios/app/harrys-laptimer-petrolhead/id338257907)

This app is an advanced tool for car enthusiasts to record and analyze sensor data for optimizing driving performance. It offers automated lap timing, video recording with data overlays, and real-time online racing competition features.

**Highlights:** Records sensor data (GPS, OBD II), Automated lap timing with 1300+ predefined tracks, In-car video recording with data overlays, Real-time online racing and competition, Driving performance analysis and optimization, Step-by-step sensor integration

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grand Prix Upgrade | $9.99 | one-time |

**What reviewers like**

- 📊 Comprehensive data logging and telemetry analysis
- 🎥 Excellent video overlay capabilities with telemetry
- 💰 Affordable alternative to expensive professional systems
- 🛠️ Highly responsive developer with active support
- 🏁 Accurate lap timing when properly configured

**What reviewers complain about**

- 🐛 Frequent app crashes and freezes
- 🎮 Confusing and unintuitive user interface
- 📍 Unreliable GPS tracking without external devices
- 🔌 Poor Bluetooth connectivity with accessories
- 📹 Video export causes app malfunction

**Reported bugs**

- App crashes when overlaying videos
- Video playback fails in Photos app until phone reboot
- Lap data not recording at certain tracks
- GPS location not recognized at specific venues
- Timer fails to start or record laps inconsistently

**Requested features**

- Ability to pause timer between sessions
- Automatic video overlay for all laps without manual processing
- Better track variant identification in database
- Improved nearby track suggestions based on location
- Dark mode option


### GLP

[App page](https://appshunter.io/ios/app/glp-timer-countdown-laptimer/id899741570)

This app automates lap timing for racing events like rallies and circuit races. It uses GPS to track your position, displays remaining time, and automatically detects laps, eliminating the need for manual stopwatches and co-drivers.

**Highlights:** GPS-based countdown lap timer, Automatic lap detection, Manual or GPS-based finish line marking, Stores lap times for retrieval, Supports driver changes for Nürburgring GLP, Optional external GPS receiver support

**In-app purchases:** none


## Frequently asked questions

### Is Harry's LapTimer Petrolhead free?

Harry's LapTimer Petrolhead costs $19.99, and also offers in-app purchases.

### Is GLP free?

GLP costs $14.99, with no in-app purchases.

### Do Harry's LapTimer Petrolhead or GLP have ads?

Neither Harry's LapTimer Petrolhead nor GLP shows ads.

### Which is updated more often, Harry's LapTimer Petrolhead or GLP?

Harry's LapTimer Petrolhead ships an update every 2 months, and GLP every 2 months. Most recently, Harry's LapTimer Petrolhead was updated on October 12, 2026 and GLP on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*