# GPS Race Timer vs Z1 HotBox

The clearest difference is review sentiment: Z1 HotBox at 100% against GPS Race Timer's 34%. Z1 HotBox also leads on in-app purchases (none vs 1) and ads (none vs shown). GPS Race Timer's advantage is rating (4.5 vs 3.7) and ratings volume (2.7K vs 7). On price, device support and iOS requirement there is nothing between them.

Both are free to download. GPS Race Timer sells 1 one-off in-app purchase. Z1 HotBox asks for nothing beyond the download.

GPS Race Timer holds the better App Store score, 4.5 against 3.7. That said, the two scores are not equally well evidenced: GPS Race Timer has 2.7K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 34% of GPS Race Timer's written reviews are positive against 100% of Z1 HotBox's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | GPS Race Timer | Z1 HotBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.7K ratings)](https://appshunter.io/ios/app/gps-race-timer/id1340496243/reviews)** | [3.7 (7 ratings)](https://appshunter.io/ios/app/z1-hotbox/id6449257546/reviews) |
| Number of ratings | **2.7K** | 7 |
| Positive reviews | 34.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 50 MB | 86 MB |
| Requires iOS | 12.2 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Hagenau](https://appshunter.io/developer/1340496242) | [Z1 Motorsports, Inc](https://appshunter.io/developer/1688398734) |

## 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


### Z1 HotBox

[App page](https://appshunter.io/ios/app/z1-hotbox/id6449257546)

This app connects to a Z1 Motorsports HotBox Performance Tuner to manage your Nissan or Infiniti vehicle's engine. It allows you to select performance modes, log engine data, and update the tuner's firmware.

**Highlights:** Select performance modes, Log engine parameters, Send logs to Z1 Motorsports, Flash firmware updates, Requires Z1 Motorsports HotBox tuner

**In-app purchases:** none


## Frequently asked questions

### Is GPS Race Timer free?

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

### Is Z1 HotBox free?

Z1 HotBox is free to download, with no in-app purchases.

### Which has better reviews, GPS Race Timer or Z1 HotBox?

GPS Race Timer is rated higher. GPS Race Timer averages 4.5 out of 5 from 2.7K ratings, while Z1 HotBox averages 3.7 from 7 ratings.

### Do GPS Race Timer or Z1 HotBox have ads?

GPS Race Timer shows ads; Z1 HotBox does not.

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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.*