For walking, cycling, riding or planning routes, OS Maps puts Great Britain’s most detailed leisure mapping at your fingertips. Simple to use and feature rich, it’s invaluable for enjoying the outdoors.

• MULTI AWARD WINNING: Yahoo Sports Technology Awards Best App, Outdoor Industry Awards Digital Product of the Year, Singletrack Best Online Service.
• DOWNLOAD FOR FREE. Get standard, Greenspace and aerial mapping of Great Britain all for free.
• If you’ve purchased an OS Explorer or Landranger map, use the app to download a digital version using the unique code on the inside of your map.

OS Explorer 1: 25,000 and OS Landranger 1:50,000 maps: subscribe to unlock the detail and accuracy of our paper leisure maps across the whole country.

View, create and sync your activities between desktop and mobile. On desktop, premium users can use our 3D Aerial Layer to plan your route terrain, explore in stunning 3D and print maps.

Plot a route to follow or share – or record your route while you’re out and about. Search for the best routes in your area as star rated by fellow outdoor enthusiasts.

Use OS Maps as your off-road satnav with automatic ‘snap-to-path’ giving you the most enjoyable and safe route between two points in National parks (Premium).

Download your favourite areas to view offline – so you can view any part of GB even without a mobile signal (Premium).

Pan the landscape to see what’s nearby including hills and mountains, forest and woodland, transport, settlements, coast and water. And, with one click, find local area information with routes, places to stay and local images (Premium)

A nifty new augmented reality feature for iOS devices*. View a 3D model of your routes on top of your very own coffee table. A great way to preview a route before you tackle it, ensure it’s suitable for your level of fitness and avoid any scary drops, or an amazing way of showing your friends where your adventures have taken you!

• Export your favourite routes to your GPX device.


OS Maps Premium is available through a 1 month (£4.99) or 1 year (£25.99) subscription. Prices are posted in GBP but may vary by country or when converted to local currency. Subscriptions will auto-renew. Payment will be charged to iTunes Account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.
Terms & Conditions at

Battery life while using the app can be extended downloading maps offline prior to use, operating in Flight Mode (the GPS will still work) and turning off the screen when not in use. We release updates to all of our apps as we improve them, making them even more stable and adding extra features. Along the way, your feedback and comments about this app is really important to us. If there’s something you’d like us to know, please tell us, by phone on 03454 56 04 20, or via email at

*This feature uses Apple's ARKit which requires an iPhone 6s, iPhone SE, iPad 2017, iPad Pro or any later device.

What's New

Version 1.16.3

We've improved the route line drawing in our stunning new AR feature: Tabletop 3D.
The route card screens and route options have been rearranged to make them easier to use.
Fixed crash in the menu for new users.

Ratings and Reviews

2.5 out of 5
423 Ratings
423 Ratings

*Still* Needs Work

Over a year of the app with a premium subscription, there have been updates and improvements. But the app is still buggy. Randomly crashes, very heavy on the cpu/gpu/memory, very slow to respond and load refreshes (iPad 4 and iPhone X), when on or following a route it doesn’t refresh - so having to take gloves off or use your nose to give the screen a nudge is rather irritating. The other thing the is really really annoying is the fight (and lose) to look elsewhere in the location you’re in as the cursor/pointer refuses to let you leave your current position when following a route. Grrr. Oh and why is it impossible or not obvious to follow your route AND record it (to compare) e.g. where you deviated from your planned route. I now use my Garmin gps to follow/direct the route and the iPhone OS app to record it, which seems a waste of time with OS. It’s good but still needs a lot more polish. Considering the premium subscription, and purchasing offline maps you should be able to put the money into some real developing. You have to realise more and more people are using online or digital versions to replace physical maps - rightly or wrongly. OS need to move with the times and aim to get up there with the likes of Garmin where you are able to be confident you’ll not fall off an edge.

Developer Response

Thanks for this feedback - to help us improve the app stability it would be really useful if you could get in touch at so we can find out more about your issue with downloaded maps.


Crashes too regularly to be usable in the mountains.

I have used the app regularly for around two years now alongside an OS maps annual subscription and fortunately I don’t solely rely on the app for navigation ad I’d have been in trouble more than once.
Even alongside an OS maps subscription and buying physical OS maps, using the download codes and actually downloading offline maps to my phone it still can’t consistently track my progress when I try and record a route and out of the last 30 days I’ve been out in the mountains only twice has it managed to record the full trip, every other time it’s just lost the route midway through. If I’d been navigating complex terrain and using the record feature to potentially be able to follow my outward path in reverse then I’d be scuppered.
Each update I hope it will improve as I’ve invested money in both my OS maps subscription, OS physical mapping and digital downloads but I’m just at a point where I need something that’s actually fit for purpose and it’s clearly time to look elsewhere.

Developer Response

We are aware of an issue when recording large routes - we are currently trying to reproduce it and are committed to finding a fix. Please accept our apologies in the meantime.


Love the app

I’ve been using the app steadily for about two years now. I don’t use it to record my walks, but it’s fantastic for downloading routes and maps to be viewed offline, as well as selecting those routes in the first place. I’ve not had any issues with the app crashing.

Setting parameters to find routes (distance, length, premium or not, marked for running/hiking/cycling) is a great way to see if someone’s already mapped a great walk in an area you’re interested in. I especially love the ability to access premium routes from walking magazines and AA guides.

The interface could be a little more intuitive, and it sometimes can’t find place names or locations (it can find some fells no problems, and for others, can only find streets names after them hundreds of miles away), which is why I’ve given it four rather than five stars.


Ordnance Survey
126.5 MB
Requires iOS 9.0 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.
© 2018 Ordnance Survey Leisure
In-App Purchases
  1. 1 month subscription £4.99
  2. 1 month auto-renewable sub £4.99
  3. 1 year subscription £25.99


  • Family Sharing

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

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