# OS2Maps — Open grid references in maps

> Converts UK OS grid references to GPS and opens them in map apps. (iPhone/iPad app by Alastair Begley.)

- Source: https://appshunter.io/ios/app/os2maps/id1368620189 (this page in markdown: same URL + `.md`)
- Developer: [Alastair Begley](https://appshunter.io/developer/1297360973)
- Category: Navigation, Utilities
- Price: $1.99
- Age rating: 4+
- Requires: iOS 11.0 · 8 MB
- Languages: American English
- Released: 2018-04-05
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/os2maps/id1368620189/reviews.md

## What is OS2Maps?

Convert UK Ordinance Survey grid references into standard GPS latitude and longitude. 

Following conversion the app enables the location to be opened easily in Apple or Google Maps.

This is useful for situations such as when a start location for a walk is provided in OS grid format as this enables Apple or Google Maps to be used to navigate to the start easily.

## Key features

- Convert UK OS grid references
- Generate GPS latitude and longitude
- Open locations in Apple Maps
- Open locations in Google Maps
- Navigate to converted locations

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/os2maps/id1368620189/reviews.md

### 1/5 — Cannot paste a grid reference

*2020-10-25*

Absolutely pointless app, you cannot paste in a grid reference, it must be typed in 2 stages. Waste of money.

**Developer response:** A grid reference can now be pasted in. Either individually into the two boxes, or a full grid reference can be pasted by pressing the paste button

### 5/5 — A real time saver

*2019-11-11*

Previously I have used what3words satellite view to locate parking area at start of walks and then sent it to Apple maps to navigate. Now I can just input OS grid reference into this app and bingo.

## Frequently asked questions about OS2Maps

### What is OS2Maps?

OS2Maps is a paid application that converts UK Ordnance Survey grid references into standard GPS latitude and longitude. It then allows you to open these converted locations directly in Apple Maps or Google Maps for easy navigation.

### How much does OS2Maps cost?

OS2Maps is a paid app with a price of $1.99. There are no in-app purchases or subscriptions required to use its full functionality.

### What devices support OS2Maps?

OS2Maps is available on Mac, iPhone, iPad, and iPod. It is designed to work across various Apple devices.

### Is OS2Maps suitable for children?

Yes, OS2Maps has an age rating of 4+, making it suitable for younger users. It is a straightforward utility app with no inappropriate content.

### How often is OS2Maps updated?

The app was last updated on March 14, 2024, with version v1.2.2. This indicates regular maintenance and potential feature additions.

### Does OS2Maps have ads?

No, OS2Maps does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

### Can OS2Maps be used offline?

The app itself functions to convert grid references offline. However, opening the converted location in Apple or Google Maps will require an active internet connection for map data and navigation.

### What makes OS2Maps useful for outdoor activities?

It's particularly useful for hikers and outdoor enthusiasts who may receive starting points or waypoints in the UK Ordnance Survey grid format. OS2Maps bridges the gap, allowing these references to be easily used with familiar navigation apps like Google Maps or Apple Maps.

## Version history (last 5 releases)

### v1.2.2 — 2024-03-14

- bug fixes

### v1.2.1 — 2021-01-25

- Ability to paste new grid reference
- Dark mode support

### v1.2.0 — 2021-01-24

- Ability to paste new grid reference
- Dark mode support

### v1.1.0 — 2020-03-20

- Added dark mode support
- Auto select text

### v1.0.3 — 2018-04-13

- Reduce number of decimals in GPS coordinates to 5 (~1m)
- Fix app crash if non numeric field was pasted into grid reference field
- Fix bug in v1.0.2

## Apps similar to OS2Maps

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [GPS Locate](https://appshunter.io/ios/app/gps-locate/id1475887688) | 4.0 (2) | $0.99 | Navigation |
| [GridPoint GB](https://appshunter.io/ios/app/gridpoint-gb/id314445598) | 4.7 (39) | Free | Navigation |
| [UK Map](https://appshunter.io/ios/app/uk-map/id365745482) | 3.3 (7) | $9.99 | Navigation |
| [MX Map Mobile](https://appshunter.io/ios/app/mx-map-mobile/id1180917855) | — | Free | Navigation |
| [UK Waterways Map](https://appshunter.io/ios/app/uk-waterways-map/id6738012734) | — | Free | Navigation |
| [Round Control](https://appshunter.io/ios/app/round-control/id1360403254) | — | Free | Navigation |

## More apps by Alastair Begley

- [StraUpload](https://appshunter.io/ios/app/straupload/id1297360974)
- [DailyGPX](https://appshunter.io/ios/app/dailygpx/id1436396425)
- [Custom Slideshow](https://appshunter.io/ios/app/custom-slideshow/id1505193335)

All apps by Alastair Begley: https://appshunter.io/developer/1297360973

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*