# bootmod3 vs GPS Race Timer

The clearest difference is review sentiment: bootmod3 at 70% against GPS Race Timer's 35%. bootmod3 also leads on in-app purchases (none vs 1) and ads (none vs shown). GPS Race Timer's advantage is iOS requirement (12.2 vs 15.0). On price, ratings volume and device support there is nothing between them.

Both are free to download. GPS Race Timer sells 1 one-off in-app purchase. bootmod3 asks for nothing beyond the download.

bootmod3 holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 1.7K and 2.7K respectively. Written reviews point the same way: 70% of bootmod3's written reviews are positive against 35% of GPS Race Timer's.

bootmod3 ships an update every 4 days, GPS Race Timer every 7 months. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | bootmod3 | GPS Race Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.7K ratings)](https://appshunter.io/ios/app/bootmod3/id1170348811/reviews)** | [4.5 (2.7K ratings)](https://appshunter.io/ios/app/gps-race-timer/id1340496243/reviews) |
| Number of ratings | 1.7K | **2.7K** |
| Positive reviews | **70.0% of reviews** | 34.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 7 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 151 MB | 50 MB |
| Requires iOS | 15.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PRO TUNING FREAKS INC.](https://appshunter.io/developer/1170348810) | [Thomas Hagenau](https://appshunter.io/developer/1340496242) |

## What reviewers say

### bootmod3

[App page](https://appshunter.io/ios/app/bootmod3/id1170348811)

This platform enables users to unlock the full performance potential of their BMW, Mini, and Toyota Supra vehicles by flashing the factory ECU and TCU. It offers features like map switching, flex fuel tuning, and anti-lag, allowing for significant horsepower gains and custom performance adjustments.

**Highlights:** ECU and TCU flashing, Map switching via steering wheel, Flex Fuel tuning, Anti-Lag functionality, Live monitoring and datalogging, Customizable map editor

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use app
- 🚀 Fast flashing and tuning
- 💪 Excellent performance gains
- 🔧 Great customization and tuning options
- ⭐ Fantastic customer support

**What reviewers complain about**

- 🐛 Occasional connectivity issues
- 🔍 Difficulty with certain features (e.g. burbles, code clearing)
- 🤔 Compatibility problems with newer iOS versions
- 🧰 Concerns about bricking ECU

**Reported bugs**

- App crashes or freezes after updates
- Inability to connect to car after iOS updates
- Trouble with flashing and tune loading

**Requested features**

- Add support for more BMW models
- Improve app UI/UX for better usability
- Expand customization options (e.g. cold start, map selection)
- Enhance data logging and diagnostics


### GPS Race Timer

[App page](https://appshunter.io/ios/app/gps-race-timer/id1340496243)

Accurately measure vehicle acceleration times like 0-60 mph and 1/4 mile using your iPhone's GPS. Set up timers beforehand and let the app automatically start measurements when speed targets are met or motion is detected. Save, export, and transfer your performance data easily.

**Highlights:** Measure 0-60 mph, 60-120 mph, 1/4 mile, Automatic start detection, Save and export results, Preset and adjustable timers, No extra hardware required, Optional PRO version features

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO | $4.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Accurate speed tracking
- 💡 Customizable settings
- 📊 Saves run data

**What reviewers complain about**

- 🐛 Inconsistent 0-60 and quarter mile times
- 🐛 Fails to start/record runs
- 🐛 Inaccurate distance tracking
- 🐛 Compatibility issues with newer devices

**Reported bugs**

- Timer doesn't reset properly
- App crashes on startup
- Significant GPS/speed detection delays
- Recorded times do not match actual performance

**Requested features**

- Add 60ft and 1/8 mile times
- Automatic start/stop of timer
- Manual start option for timer
- Improved accuracy and consistency


## Frequently asked questions

### Is bootmod3 free?

bootmod3 is free to download, with no in-app purchases.

### Is GPS Race Timer free?

GPS Race Timer is free to download, with in-app purchases available.

### Which has better reviews, bootmod3 or GPS Race Timer?

bootmod3 is rated higher. bootmod3 averages 4.8 out of 5 from 1.7K ratings, while GPS Race Timer averages 4.5 from 2.7K ratings.

### Do bootmod3 or GPS Race Timer have ads?

GPS Race Timer shows ads; bootmod3 does not.

### Which is updated more often, bootmod3 or GPS Race Timer?

bootmod3 ships an update every 4 days, and GPS Race Timer every 7 months. Most recently, bootmod3 was updated on September 24, 2026 and GPS Race Timer on September 20, 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.*