# GPS Race Timer vs Vacci Dropper

The clearest difference is in-app purchases: Vacci Dropper at none against GPS Race Timer's 1. Vacci Dropper also leads on ads (none vs shown) and update cadence (every 2 months vs every 7 months). GPS Race Timer's advantage is device support (3 vs 1) and iOS requirement (12.2 vs 16.0). On price there is nothing between them.

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

GPS Race Timer ships an update every 7 months, Vacci Dropper every 2 months. The most recent releases landed on November 6, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | GPS Race Timer | Vacci Dropper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.8K ratings)](https://appshunter.io/ios/app/gps-race-timer/id1340496243/reviews)** | — |
| Number of ratings | **2.8K** | — |
| Positive reviews | 34.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 6 MB |
| Requires iOS | **12.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Hagenau](https://appshunter.io/developer/1340496242) | [Colorado State University](https://appshunter.io/developer/527760765) |

## 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


### Vacci Dropper

[App page](https://appshunter.io/ios/app/vacci-dropper/id6468026746)

**Features:** macOS Compatibility

**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 Vacci Dropper free?

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

### Do GPS Race Timer or Vacci Dropper have ads?

GPS Race Timer shows ads; Vacci Dropper does not.

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

GPS Race Timer ships an update every 7 months, and Vacci Dropper every 2 months. Most recently, GPS Race Timer was updated on November 6, 2026 and Vacci Dropper on October 27, 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.*