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Memory-Map | GPS navigation with Ordnance Survey maps

By Memory-Map

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Don’t just take our word for it - try it with Ordnance Survey Explorer and Landranger maps anywhere in Great Britain.

***** “A fantastic way to use OS maps” Ordnance Survey
***** “Plan routes and track progress - excellent app” Country Walking magazine
***** “Email routes from your PC or Mac straight to your mobile - simple” Trail magazine
***** “Cheapest Admiralty charts” Yachting Monthly
***** “Turns your phone into an outdoor GPS” Outdoor Photography
***** “Never get lost again” Horse + Hound

Turn your iPhone or iPad into an outdoor, aviation or marine GPS. Download and activate maps so you can safely navigate even without phone signal. Lock on to GPS and the map moves with you constantly showing your current position, the direction you’re heading and even a tracklog of where you’ve been.

It’s the easiest and simplest way to make sure you don’t get lost outdoors.

+ New lowest price 2013 OS Landranger 1:50,000 GB*
+ New lowest price 2013 OS Explorer 1:25,000 GB*
+ Save maps to your phone to safely navigate even without phone signal
+ See your position on a moving OS map

Plus advanced GPS features:
+ Plan routes, measure distance and bearings
+ Create and edit waypoints with web links
+ Import and export GPX files
+ Auto-rotate screen, or lock in your preferred orientation.
+ Screen lock prevents accidental screen touches while track recording
+ Shows speed and direction of travel, even while walking slowly
+ User On/Off setting to record tracklog in background
+ DigitalGPS data displays with all the nav data you’ll need
+ Lat/Long, UTM and British National Grid coordinate systems
+ Email position, waypoints or tracklogs as GPX files

Memory-Map – navigating you outdoors safely with digital maps since 2001. With thanks to our hundreds of thousands of users worldwide.

2013 M-OS50k and M-OS25k maps: Purchase these new low cost maps though the app to give you access to 2013 OS Landranger and Explorer maps for the whole of Great Britain. Then choose to download the areas you need for the places you visit. Depending on your device, its memory capacity and the scale of mapping you choose the total area of mapping available to cache offline will vary. Typically for OS 50k the total amount you’ll be able to cache is over 30 times the size of the Lake District National Park and for OS 25k nearly 10 times the size.

Battery Use Disclaimer: "Continued use of GPS running in the background can dramatically decrease battery life."

What's New in Version 1.6.2

Preview maps before buying in-app


iPhone Screenshot 1
iPhone Screenshot 2
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3

Customer Reviews

Reuse PC Ordnance Survey Memory Maps

If you have a version V5 OS maps bought for your PC or used on a PDA - I used an HP240 for many years with MM - you can transfer these to your iPad or iPhone using iTunes. Just make sure MM is not running on your iDevice and connect to your PC, open iTunes, select the iDevice, select Apps, click on the MM application and click Add. Locate map files on PC and transfer the .qct and the .mmi files you need - mmi are the index and qct are the actual map. There is no need to purchase a licence. Map scrolling is fast and accurate, I have whole of UK OS50 plus all of Europe.

This is great reuse of your OS maps. The app is a bit clunky but does the job - doesn't seem to load .gpx files though, e.g. Geocache info so not a good as the old PDA Memory Map.

Development Team cannot be bothered to fix bugs

Really annoying bug whereby it's not possible to search on place names with accented characters. Notified Memory-Map about the bug on the 13 Nov 2011. As of 20 February 2013 the bug remains unfixed even though five newer versions of the software have been released. Their development team is lazy and incompetent. The Memory-Map forum is pre-moderated and they do not publish posts when you raise queries about issues they don't want to answer.

Fat chance I know, but it would be nice if there was a map scale and the possibility of turning off the low resolution mapping which is downloaded automatically and wastes space on the device. These features have been in the Windows Mobile version for years. However, as previously stated, the current development team are inept so our Sun will probably end its life before this functionality is ever added.


I originally had this for my iPhone 4 and have been buying tiles on this as a handy platform to carry about and to use 'on the hoof'. I have now got me an iPad as well and would like to plan and view routes on the larger iPad screen for easier viewing. After a while of web searching and attempts With no success i finally sent off an email to MM although I got a reply within 24 hours the outcome of this was reply was most disappointing....

I must basically use my credit to buy the maps for each device separately. So not happy and looking at alternatives that will allow transfer of maps, routes, plans etc between devices. Loved the app and the map detailing but the in app purchases are very annoying to have to buy twice!

Memory-Map | GPS navigation with Ordnance Survey maps
View In iTunes
This app is designed for both iPhone and iPad
  • £0.79
  • Category: Navigation
  • Updated:
  • Version: 1.6.2
  • Size: 4.6 MB
  • Language: English
  • Developer:

Compatibility: Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimised for iPhone 5.

Customer Ratings

Current Version:
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Top In-App Purchases

  1. Mobile Topo: OS 50k Landranger 2013£26.99
  2. Import 3rd Party maps£21.99
  3. Mobile Topo: OS 25k Explorer 2013£229.99
  4. OS 1:25,000 Explorer topo map, HD 2015 edition£199.99
  5. OS 1:50,000 Landranger topo map, 2015 edition£59.99
  6. Topo WA£29.99
  7. OS StreetView 2015£12.99
  8. OS 1:50,000 Landranger topo map, HD 2015 edition£74.99
  9. NOAA charts. 2015 edition now available.£7.99
  10. USGS Topo New England£7.99