The MapFinder app will remain for customers to use and access their purchased map tiles but unfortunately will no longer be updated with new features and content. For the latest and most up to date app from Ordnance survey search for ‘OS Maps’. This app also allows customers to download a digital version of their paper map, and view and subscribe to see all of the GB Ordnance Survey maps. OS Maps won the Digital Product of the year 2017 by the Outdoor Industry Association.

Please note: OS Maps and The MapFinder are not compatible and therefore purchases cannot be transferred between the apps.

The MapFinder is a large download. With it, you can search our 1:250 000 scale road map by place name, postcode or address. You won’t even need an internet connection to search as it also works offline. Then, via the in-app options, you can buy the OS Landranger (1:50 000) and OS Explorer (1:25 000) close-up maps of the areas you’d like to focus on.

Despite our original commitment to maintain this application until April 2016, we have continued maintenance into 2017. Whilst we will no longer develop content and features going forward, the application will still be available for existing customers to continue to use their purchased content. As operating systems are updated the application may become less stable. For the most stable and up to date application from Ordnance Survey we would recommend the OS Maps app.

The MapFinder includes:

• A free overview of Great Britain at 1:250 000 scale
• Free road maps down to street level
• Options to buy high-resolution OS Explorer and OS Landranger maps
• Route recording and planning tools – record your routes in real time
• Route import and export functions
• Time, distance, OS grid references, latitude and longitude
• Select a route, see how long it will take on average to walk
• Place name look-up – postcodes and places in Great Britain
• Ordnance Survey grid reference look-up
• And useful tips on how to read and navigate maps

Customer Support
Our team is here to help if you get any problems with The MapFinder. If you can, check the FAQs first at, or contact us via our online customer service portal at

App and Map sizes
The app is a large download. It has to save the maps and search database to your device. Please make sure your device has enough free space and you’re connected to a stable WiFi point before starting the download. The purchasable map sections are around 60MB each. If you want to save space, you can remove a purchased map section from your device, and then download it again (free of charge) when you next need it.

Continued use of GPS running in the background can dramatically decrease battery life..

Ordnance Survey is committed to creating the best mobile mapping experiences. We welcome your feedback and comments, and strive to act promptly on any complaints. Please get in contact with us via Twitter @OSLeisure, by phone on 03454 56 04 20
or via email at

What's New

Version 3.1.4

Bug Fixes and updates:

Fixed crash during opening Trails Details.

Customer Reviews

2 out of 5

25 Ratings

25 Ratings

Upset I have lost my investment

Another Z17

I enjoy using this app and every time I visited a new region I would purchase that region. I am so used to their cartography been using OS for 50+ years. The offline feature was absolutely necessary as only use WiFi as even without the SIM fitted the gps is good on a cellular iPad. Can’t use other maps without costly data and cellular connection.
Now I hear a new app is out and I cannot move my maps to the new app.
Is it worth buying any more maps if the app is NOT going to be supported? I wouldn’t have spent £70+ on a biodegradable map book. However, it seems the Ordinance Survey can take away my digital maps I spent money on.

Recently started losing signal


I loved this app, we used to use it all the time and recorded our walks to check distances and timings etc, but recently every time the phone goes to sleep or you go into another app you get the message when back in the app that it has lost the gps signal. I have no idea if this is an apple IOS issue or the app, but it NEVER uses to do this, now every time. A real shame because I use this capability all the time.

Great maps but rubbish app!


Two years on and it hasn't improved. If I buy a 25k tile for a particular area the one would expect to get the 50k version bundled with it. So I have 50k tiles but the areas that I have 25k tiles still show the 250k overall picture until I zoom in to the 25k tile - confusing and basically rubbish.
No direct measurement or bearing function - I could go on . . .
I get a better result using my Navionics app and that's supposed to be for marine navigation.
About time OS started listening to what people want.


Ordnance Survey Limited
348.2 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© Ordnance Survey Leisure
In-App Purchases
  1. 1:50k England South West Region £13.99
  2. 1:50k England South East Region £13.99
  3. 1:50k Wales Region £13.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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