# GPS Diagnostic vs GPS Data

The clearest difference is price: GPS Data at Free against GPS Diagnostic's $2.99. GPS Diagnostic's advantage is ads (none vs shown) and rating (4.6 vs 4.4). On review sentiment, ratings volume, update cadence and in-app purchases there is nothing between them.

GPS Data is free to download; GPS Diagnostic costs $2.99 up front. GPS Diagnostic sells 1 one-off in-app purchase and GPS Data sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

GPS Diagnostic holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 554 and 458 respectively. Written reviews split almost evenly too, at 78% and 77% positive.

GPS Diagnostic ships an update every 3 weeks, GPS Data fortnightly. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | GPS Diagnostic | GPS Data |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (554 ratings)](https://appshunter.io/ios/app/gps-diagnostic-satellite-test/id1020967894/reviews)** | [4.4 (458 ratings)](https://appshunter.io/ios/app/gps-data-coordinates-and-speed/id1083013512/reviews) |
| Number of ratings | **554** | 458 |
| Positive reviews | **78.0% of reviews** | 77.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#49** | — |
| Size | 34 MB | 9 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [David Ryall](https://appshunter.io/developer/925576172) | [Oscar Fawkes](https://appshunter.io/developer/1749713533) |

## What reviewers say

### GPS Diagnostic

[App page](https://appshunter.io/ios/app/gps-diagnostic-satellite-test/id1020967894)

**Currently charting:** #49 Top Paid · Navigation (US App Store)

This app tests your device's GPS module, providing precise navigation parameters and diagnosing location issues. It supports multiple satellite systems and offers advanced coordinate conversions through an in-app purchase.

**Highlights:** Test GPS module, Fast GPS lock time, Precise navigation parameters, GPS "JumpStart" technology, Full satellite system support, Additional coordinate systems (IAP)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coordinates-Pro | Free | one-time |

**What reviewers like**

- 👍 Helpful diagnostic tool
- 🚀 Provides detailed GPS information
- 🔧 Useful for troubleshooting GPS issues
- 💡 Allows resetting GPS receiver
- 👍 Clean and intuitive interface

**What reviewers complain about**

- 🐛 Compatibility issues with newer iOS versions
- 🔍 Limited satellite data display (only 4 bars)
- 📝 Email support button not working
- 🔍 Lacks detailed information on satellite types

**Reported bugs**

- Crashes on startup for some users
- Fails to detect GPS signal on certain devices

**Requested features**

- Display number of satellites in view and locked
- Expand satellite signal strength graph to show more satellites
- Add support for landscape mode
- Provide more detailed GPS information (e.g., HDOP, VDOP)


### GPS Data

[App page](https://appshunter.io/ios/app/gps-data-coordinates-and-speed/id1083013512)

Access detailed location data from your device, including GPS coordinates, elevation, speed, and direction. View information in a clear list format, with options for full-screen displays on iOS for at-a-glance monitoring while moving.

**Highlights:** Current time and update intervals, Latitude and Longitude coordinates, Elevation in meters and feet, Speed in various units (mph, km/h, knots), Device and movement direction, Local air pressure, Vertical speed

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $3.99 | one-time |

**What reviewers like**

- 📍 Accurate GPS coordinates and data
- ⌚ Apple Watch integration and standalone functionality
- 🎯 Simple, intuitive interface
- 📊 Displays comprehensive GPS data (speed, altitude, heading, accuracy)
- 🔄 Multiple unit options without changing settings

**What reviewers complain about**

- ⏰ No updates for 4 years
- ⌚ Limited Apple Watch functionality and display
- 📺 Overlapping text and heading labels on display
- 💰 Ads present even in paid version
- 🔢 Excessive decimal places for coordinates

**Reported bugs**

- App doesn't work on Apple Watch (no data displayed)
- Speed display shows only a dash on Apple Watch 4
- GPS coordinates not displayed on Apple Watch
- Compass doesn't work on Apple Watch
- Latitude/longitude format changes when sending via SMS

**Requested features**

- Satellite lock count display
- Consolidated watch page with speed, course, and altitude together
- Apple Watch compass functionality
- Latitude/longitude display on Apple Watch
- Cardinal direction display on Apple Watch (N, S, E, W)


## Frequently asked questions

### Is GPS Diagnostic free?

GPS Diagnostic costs $2.99, and also offers in-app purchases.

### Is GPS Data free?

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

### Which has better reviews, GPS Diagnostic or GPS Data?

GPS Diagnostic is rated higher. GPS Diagnostic averages 4.6 out of 5 from 554 ratings, while GPS Data averages 4.4 from 458 ratings.

### Do GPS Diagnostic or GPS Data have ads?

GPS Data shows ads; GPS Diagnostic does not.

### Which is updated more often, GPS Diagnostic or GPS Data?

GPS Diagnostic ships an update every 3 weeks, and GPS Data fortnightly. Most recently, GPS Diagnostic was updated on November 6, 2026 and GPS Data on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*