# GB Grid Ref Compass vs PostCodeStar

The clearest difference is price: PostCodeStar at Free against GB Grid Ref Compass's $0.99. GB Grid Ref Compass's advantage is update cadence (every 6 months vs every 31 months) and iOS requirement (7.1 vs 14.0). On ads, in-app purchases and device support there is nothing between them.

PostCodeStar is free to download; GB Grid Ref Compass costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GB Grid Ref Compass ships an update every 6 months, PostCodeStar every 31 months. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | GB Grid Ref Compass | PostCodeStar |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/gb-grid-ref-compass/id515935554/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 78.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 31 months |
| Monetization | Free | — |
| Size | 2 MB | 14 MB |
| Requires iOS | **7.1** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mike Irving](https://appshunter.io/developer/393933736) | [Achorda Ltd](https://appshunter.io/developer/1495039580) |

## What reviewers say

### GB Grid Ref Compass

[App page](https://appshunter.io/ios/app/gb-grid-ref-compass/id515935554)

This app displays your current location on a map of Great Britain, providing your GB Grid Reference, compass bearing, and latitude/longitude. It also shows GPS accuracy and includes a guide to the National Grid system. Location data can be shared via text, email, or tweet.

**Highlights:** GB Grid Reference (Ordnance Survey), Compass Bearing, Latitude and Longitude (OSGB36 & WGS84), GPS Accuracy Display, National Grid graphical guide, Location sharing (SMS, Email, Tweet)

**Features:** Vision Pro support

**In-app purchases:** none


### PostCodeStar

[App page](https://appshunter.io/ios/app/postcodestar/id1495039581)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GB Grid Ref Compass free?

GB Grid Ref Compass costs $0.99, with no in-app purchases.

### Is PostCodeStar free?

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

### Do GB Grid Ref Compass or PostCodeStar have ads?

Neither GB Grid Ref Compass nor PostCodeStar shows ads.

### Which is updated more often, GB Grid Ref Compass or PostCodeStar?

GB Grid Ref Compass ships an update every 6 months, and PostCodeStar every 31 months. Most recently, GB Grid Ref Compass was updated on October 6, 2026 and PostCodeStar on September 29, 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.*