# Coordinates vs GPS OS Grid Reference

The clearest difference is ads: GPS OS Grid Reference at none against Coordinates's shown. GPS OS Grid Reference also leads on review sentiment (90% vs 63%). Coordinates's advantage is ratings volume (6.6K vs 17) and update cadence (monthly vs every 3 months). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Coordinates sells 6 in-app purchases, starting at $1.99 per month and GPS OS Grid Reference sells 2 in-app purchases, starting at $5.99 per year. Whichever you choose, the download price is not the number that matters.

Coordinates holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Coordinates has 6.6K ratings behind it against 17, so its average is the more settled of the two. Written reviews complicate that: 63% of Coordinates's written reviews are positive against 90% of GPS OS Grid Reference's, so the app with the better star average is not the one people write more warmly about.

Coordinates ships an update monthly, GPS OS Grid Reference every 3 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Coordinates | GPS OS Grid Reference |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (6.6K ratings)](https://appshunter.io/ios/app/coordinates-gps-converter/id494286614/reviews)** | [4.4 (17 ratings)](https://appshunter.io/ios/app/gps-os-grid-reference/id993436655/reviews) |
| Number of ratings | **6.6K** | 17 |
| Positive reviews | 63.4% of reviews | **89.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 99 MB | 13 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Mapnitude Company Limited](https://appshunter.io/developer/473558784) | [Tomstrails.com](https://appshunter.io/developer/425642318) |

## What reviewers say

### Coordinates

[App page](https://appshunter.io/ios/app/coordinates-gps-converter/id494286614)

This app is a versatile tool for converting and managing geographic coordinates. It supports numerous global formats and datums, allowing users to view, input, and save locations with rich details. Ideal for professionals and outdoor enthusiasts needing precise location data.

**Highlights:** Coordinate conversion (UTM, MGRS, Georef, etc.), Batch conversion of multiple coordinates, Add notes, photos, and media to saved locations, Datum conversion with PROJ.4 support, Real-time navigation and tracking, Offline map tile downloads, Import/export GPX, GeoJSON, KML files

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Upgrade | $1.99 | per month |
| Plus Upgrade | $2.99 | per month |
| Plus Upgrade | $9.99 | per 6 months |
| Plus Upgrade | $15.99 | per 6 months |
| Plus Upgrade | $17.99 | per year |
| Plus Upgrade | $28.99 | per year |

**What reviewers like**

- 🚀 Accurate location finding
- 👍 Simple and easy to use
- 💡 Supports multiple coordinate formats
- 🚀 Works well overseas
- 👍 Helpful for environmental research

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 💰 Expensive subscription to remove ads
- 🤔 Confusing or unintuitive user interface
- 🔍 Difficulty finding small locations
- 🙄 Ads covering important information

**Reported bugs**

- Coordinate display issues (e.g., UTM showing incorrect hemisphere)
- App crashing or freezing on launch
- Inability to delete drawn lines or markers
- Coordinate conversion not working as expected
- Compatibility issues with newer iPhone models

**Requested features**

- Navigation and routing functionality
- Support for What3Words coordinate system
- Option to set preferred coordinate format as default
- Ability to enter addresses or intersections to get coordinates
- Add altitude information to saved locations


### GPS OS Grid Reference

[App page](https://appshunter.io/ios/app/gps-os-grid-reference/id993436655)

This app accurately pinpoints your location on Ordnance Survey maps for Great Britain and Ireland, even without a phone signal. It offers precise grid references, waypoint creation, and navigation features. The display is designed for clarity in all lighting conditions, and it optimizes battery usage.

**Highlights:** Offline map location, Accurate grid references, Waypoint creation and management, High-contrast display, Battery optimization, Share waypoints

**Features:** Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $5.99 | per year |
| Feature Pack - Compass & sharing features. | Free | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🎯 Accurate grid references
- 🚀 Fast and quick updates
- 💡 Works without phone signal
- 🗺️ Useful for navigation and backup

**What reviewers complain about**

- 🐛 Blurry satellite maps
- 🧭 Compass not accurate
- 📉 Accuracy dropped recently
- 🗺️ No map data included
- 🚫 Cannot search locations

**Reported bugs**

- Waypoint finder satellite view is blurry
- Compass is not accurate
- Accuracy has dropped recently
- Location services permanently dimmed off (iOS)
- App does not work for users not in England

**Requested features**

- Add map data and search functionality
- Improve satellite map clarity
- Add ability to view location on a map
- Enable navigation from point to point
- Add Apple Watch equivalent app


## Frequently asked questions

### Is Coordinates free?

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

### Is GPS OS Grid Reference free?

GPS OS Grid Reference is free to download, with in-app purchases available.

### Which has better reviews, Coordinates or GPS OS Grid Reference?

Coordinates is rated higher. Coordinates averages 4.6 out of 5 from 6.6K ratings, while GPS OS Grid Reference averages 4.4 from 17 ratings.

### Do Coordinates or GPS OS Grid Reference have ads?

Coordinates shows ads; GPS OS Grid Reference does not.

### Which is updated more often, Coordinates or GPS OS Grid Reference?

Coordinates ships an update monthly, and GPS OS Grid Reference every 3 months. Most recently, Coordinates was updated on October 12, 2026 and GPS OS Grid Reference on October 14, 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.*