# Harry's LapTimer Petrolhead vs OnTrack

The clearest difference is price: OnTrack at Free against Harry's LapTimer Petrolhead's $19.99. OnTrack also leads on update cadence (every 4 weeks vs every 2 months). Harry's LapTimer Petrolhead's advantage is rating (3.8 vs 3.3) and review sentiment (77% vs 37%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

OnTrack is free to download; Harry's LapTimer Petrolhead costs $19.99 up front. Harry's LapTimer Petrolhead sells 1 one-off in-app purchase and OnTrack sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Harry's LapTimer Petrolhead holds the better App Store score, 3.8 against 3.3. Both are backed by a comparable volume of ratings — 153 and 57 respectively. Written reviews point the same way: 77% of Harry's LapTimer Petrolhead's written reviews are positive against 37% of OnTrack's.

Harry's LapTimer Petrolhead ships an update every 2 months, OnTrack every 4 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Harry's LapTimer Petrolhead | OnTrack |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[3.8 (153 ratings)](https://appshunter.io/ios/app/harrys-laptimer-petrolhead/id338257907/reviews)** | [3.3 (57 ratings)](https://appshunter.io/ios/app/ontrack-obd2-scanner/id6446315145/reviews) |
| Number of ratings | **153** | 57 |
| Positive reviews | **76.6% of reviews** | 37.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#170** | — |
| Size | 78 MB | 22 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Harald Schlangmann](https://appshunter.io/developer/307688601) | [OnTrack Apps Limited](https://appshunter.io/developer/1647551624) |

## What reviewers say

### Harry's LapTimer Petrolhead

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

**Currently charting:** #170 Top Paid · Sports (US App Store)

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


### OnTrack

[App page](https://appshunter.io/ios/app/ontrack-obd2-scanner/id6446315145)

Monitor your car's real-time performance data on the racetrack with this CarPlay-enabled app. Set custom alerts for critical parameters like temperature to optimize your vehicle's performance and stay focused on the road.

**Highlights:** CarPlay integration, Real-time performance monitoring, Engine RPM, coolant temperature, oil pressure, Customizable temperature alerts, Instant notifications for threshold breaches, User-friendly display

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly - Best Value | $29.99 | per year |

**What reviewers like**

- 👍 Great CarPlay integration
- 💡 Useful for monitoring temps and info
- 🚀 Fast refresh rate
- 👍 Easy to read info at a glance
- 👍 Highly customizable

**What reviewers complain about**

- 🐛 Connection issues with various dongles
- 🐛 Lack of support/unresponsive developers
- 🐛 App crashes
- 🐛 Limited PIDs available
- 🐛 Boost pressure limit

**Reported bugs**

- Lost connections with Vgate Pro
- App crashes as soon as it connects to OBD2 reader since iOS 18
- Öltemperatur (Oil temperature) not read for VW/Audi vehicles
- Boost bar maxes at 1.5 bar / 22.3psi
- Not connecting to OBDLink CX

**Requested features**

- Add gauges instead of numbers for CarPlay
- Add more PIDs (e.g., exhaust gas temperature, transmission temp)
- Vehicle selector
- Support landscape mode
- Add custom PIDs for vehicle-specific measurements


## Frequently asked questions

### Is Harry's LapTimer Petrolhead free?

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

### Is OnTrack free?

OnTrack is free to download, with in-app purchases available.

### Which has better reviews, Harry's LapTimer Petrolhead or OnTrack?

Harry's LapTimer Petrolhead is rated higher. Harry's LapTimer Petrolhead averages 3.8 out of 5 from 153 ratings, while OnTrack averages 3.3 from 57 ratings.

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

Neither Harry's LapTimer Petrolhead nor OnTrack shows ads.

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

Harry's LapTimer Petrolhead ships an update every 2 months, and OnTrack every 4 weeks. Most recently, Harry's LapTimer Petrolhead was updated on November 1, 2026 and OnTrack on November 3, 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.*