# Watch Speedometer Pro CarPlay vs GPS Altimeter

The clearest difference is in-app purchases: GPS Altimeter at none against Watch Speedometer Pro CarPlay's 2. GPS Altimeter also leads on update cadence (weekly vs monthly) and iOS requirement (15.0 vs 26.0). Watch Speedometer Pro CarPlay's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Watch Speedometer Pro CarPlay sells 2 in-app purchases, starting at $9.99 per year. GPS Altimeter asks for nothing beyond the download.

Watch Speedometer Pro CarPlay ships an update monthly, GPS Altimeter weekly. The most recent releases landed on November 4, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Watch Speedometer Pro CarPlay | GPS Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/watch-speedometer-pro-carplay/id1444746891/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 6 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Hering](https://appshunter.io/developer/327542085) | [珊珊 黄](https://appshunter.io/developer/6815334106) |

## What reviewers say

### Watch Speedometer Pro CarPlay

[App page](https://appshunter.io/ios/app/watch-speedometer-pro-carplay/id1444746891)

Track your real-time speed during various activities like walking, driving, or flying. View historical data, speed scores, and location details. Supports multiple units and offers seamless syncing between devices.

**Highlights:** Live speed tracking, GPS and background modes, Heatmap visualization, Daily Speed Score, Unit conversion (km/h, mph, knots, m/s, ft/s), Watch and iPhone syncing, One-time purchase for all features

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Subscription | $9.99 | per year |
| Lifetime Access | $24.99 | one-time |


### GPS Altimeter

[App page](https://appshunter.io/ios/app/gps-altimeter-elevation-meter/id6817703021)

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

**In-app purchases:** none


## Frequently asked questions

### Is Watch Speedometer Pro CarPlay free?

Watch Speedometer Pro CarPlay is free to download, with in-app purchases available.

### Is GPS Altimeter free?

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

### Do Watch Speedometer Pro CarPlay or GPS Altimeter have ads?

GPS Altimeter shows ads; Watch Speedometer Pro CarPlay does not.

### Which is updated more often, Watch Speedometer Pro CarPlay or GPS Altimeter?

Watch Speedometer Pro CarPlay ships an update monthly, and GPS Altimeter weekly. Most recently, Watch Speedometer Pro CarPlay was updated on November 4, 2026 and GPS Altimeter on November 1, 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.*