# GPS Diagnostic vs GPS Data Smart

The clearest difference is price: GPS Data Smart at Free against GPS Diagnostic's $2.99. GPS Diagnostic's advantage is update cadence (every 3 weeks vs every 4 months) and chart position (#58 vs unranked). On rating, review sentiment, ratings volume and ads there is nothing between them.

GPS Data Smart is free to download; GPS Diagnostic costs $2.99 up front. GPS Diagnostic sells 1 one-off in-app purchase and GPS Data Smart sells 2 in-app purchases, starting at $0.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for GPS Diagnostic against 4.7 for GPS Data Smart. Both are backed by a comparable volume of ratings — 553 and 419 respectively. Written reviews are what separate them: 78% of GPS Diagnostic's written reviews are positive against 74% of GPS Data Smart's.

GPS Diagnostic ships an update every 3 weeks, GPS Data Smart every 4 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | GPS Diagnostic | GPS Data Smart |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.7 (553 ratings)](https://appshunter.io/ios/app/gps-diagnostic-satellite-test/id1020967894/reviews) | **[4.7 (419 ratings)](https://appshunter.io/ios/app/gps-data-smart/id1076838348/reviews)** |
| Number of ratings | **553** | 419 |
| Positive reviews | **78.0% of reviews** | 73.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#58** | — |
| Size | 34 MB | 22 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Ryall](https://appshunter.io/developer/925576172) | [ExaMobile S.A.](https://appshunter.io/developer/506014841) |

## What reviewers say

### GPS Diagnostic

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

**Currently charting:** #58 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 Smart

[App page](https://appshunter.io/ios/app/gps-data-smart/id1076838348)

Track your outdoor activities with detailed GPS information. Monitor altitude, speed, location, and signal quality. View sunrise/sunset times and local UTC time on a world map.

**Highlights:** Altitude and elevation tracking, Latitude and longitude coordinates, Speed in km/h or mph, GPS signal quality indicator, Directional compass, Sunrise and sunset times, Local UTC time

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO | $0.99 | per year |
| Premium | $2.99 | one-time |

**What reviewers like**

- 👍 Simple and intuitive interface
- 🎯 Accurate GPS coordinates and data
- ⚡ Fast and responsive performance
- 🧹 Clean, uncluttered design
- 📍 Multiple coordinate format options

**What reviewers complain about**

- 🐛 App crashes on older iOS versions
- 🔒 Unauthorized clipboard access privacy concern
- ❌ Missing advertised features in screenshots
- 💳 Premium features require payment despite description
- ⚠️ Inconsistent functionality across devices

**Reported bugs**

- App crashes on iOS 9.3.6 and older versions
- Clipboard access without user permission
- Premium payment issues - repeated charges
- Radar page freezes when adding location
- App unresponsive after entering address in radar

**Requested features**

- Marine coordinate format (DD MM.MMM)
- Speed display in knots
- Satellite PRN (Pseudo-Random Noise) information
- Precise heading/bearing in degrees (001-360)
- Photo capture and attachment functionality


## Frequently asked questions

### Is GPS Diagnostic free?

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

### Is GPS Data Smart free?

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

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

GPS Data Smart is rated higher. GPS Diagnostic averages 4.7 out of 5 from 553 ratings, while GPS Data Smart averages 4.7 from 419 ratings.

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

Neither GPS Diagnostic nor GPS Data Smart shows ads.

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

GPS Diagnostic ships an update every 3 weeks, and GPS Data Smart every 4 months. Most recently, GPS Diagnostic was updated on October 26, 2026 and GPS Data Smart on October 26, 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.*