# GridPoint GB vs OS2Maps

The clearest difference is price: GridPoint GB at Free against OS2Maps's $1.99. GridPoint GB also leads on review sentiment (72% vs 50%). OS2Maps's advantage is in-app purchases (none vs 3) and update cadence (every 6 days vs every 16 months). On ads, device support and iOS requirement there is nothing between them.

GridPoint GB is free to download; OS2Maps costs $1.99 up front. GridPoint GB sells 3 one-off in-app purchases. OS2Maps asks for nothing beyond the download.

GridPoint GB ships an update every 16 months, OS2Maps every 6 days. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | GridPoint GB | OS2Maps |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | **72.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 23 MB | 8 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [George MacKerron](https://appshunter.io/developer/314445601) | [Alastair Begley](https://appshunter.io/developer/1297360973) |

## What reviewers say

### GridPoint GB

[App page](https://appshunter.io/ios/app/gridpoint-gb/id314445598)

Locate yourself on a paper Ordnance Survey map using your iPhone's GPS and compass, even without mobile reception. It provides your grid reference and heading, with accurate coordinate conversions. Features include Apple Watch integration, location sharing, and sunset/sunrise times.

**Highlights:** GPS and compass for location, Accurate coordinate conversions, Apple Watch app and complication, Location sharing, Sunset and sunrise times, Distress signal

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Magnificent tip | $2.99 | one-time |
| Majestic tip | $4.99 | one-time |
| Monumental tip | $8.99 | one-time |


### OS2Maps

[App page](https://appshunter.io/ios/app/os2maps/id1368620189)

This app converts UK Ordnance Survey grid references into standard GPS coordinates. Once converted, it allows you to easily open these locations in Apple Maps or Google Maps for navigation. It's ideal for planning outdoor activities where starting points are given in OS grid format.

**Highlights:** Convert UK OS grid references, Generate GPS latitude and longitude, Open locations in Apple Maps, Open locations in Google Maps, Navigate to converted locations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GridPoint GB free?

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

### Is OS2Maps free?

OS2Maps costs $1.99, with no in-app purchases.

### Do GridPoint GB or OS2Maps have ads?

Neither GridPoint GB nor OS2Maps shows ads.

### Which is updated more often, GridPoint GB or OS2Maps?

GridPoint GB ships an update every 16 months, and OS2Maps every 6 days. Most recently, GridPoint GB was updated on September 17, 2026 and OS2Maps on September 10, 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.*