# GPS Race Timer vs DoAuth

The clearest difference is ads: DoAuth at none against GPS Race Timer's shown. DoAuth also leads on update cadence (every 2 days vs every 7 months). GPS Race Timer's advantage is iOS requirement (12.2 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. GPS Race Timer sells 1 one-off in-app purchase and DoAuth sells 1 in-app purchase, starting at $10.00 per year. Whichever you choose, the download price is not the number that matters.

GPS Race Timer ships an update every 7 months, DoAuth every 2 days. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | GPS Race Timer | DoAuth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.7K ratings)](https://appshunter.io/ios/app/gps-race-timer/id1340496243/reviews)** | — |
| Number of ratings | **2.7K** | — |
| Positive reviews | 34.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 8 MB |
| Requires iOS | **12.2** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Hagenau](https://appshunter.io/developer/1340496242) | [Jan Nahly Do](https://appshunter.io/developer/6798403895) |

## What reviewers say

### 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


### DoAuth

[App page](https://appshunter.io/ios/app/doauth/id6808760897)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DoAuth Annual | $10.00 | per year |


## Frequently asked questions

### Is GPS Race Timer free?

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

### Is DoAuth free?

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

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

GPS Race Timer shows ads; DoAuth does not.

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

GPS Race Timer ships an update every 7 months, and DoAuth every 2 days. Most recently, GPS Race Timer was updated on October 11, 2026 and DoAuth on October 4, 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.*