Turn your iPhone or iPad into an outdoor GPS or marine chart plotter, with the detailed Topo maps or NOAA marine charts needed for your activity. Maps are stored on the device for offline use, when you don't have any network connection. The GPS will show your location even where you have no mobile phone signal.

The app can be used standalone, but the maps and overlay data may also be used on your home PC or Mac for planning, and for printing maps on paper. Then upload everything to your phone or tablet and enjoy navigating outdoors with high quality maps.

When you get home you can transfer your tracklog and points of interest back onto your computer, to see where you actually went, analyze your speed and elevation profile, and so on.

Whether you are fishing, paddling, backpacking, mountain biking or sailing, enjoy your time in the wilderness with Memory-Map. We have been developing mobile navigation apps since year 2000, and our products are trusted by mountain rescue teams, police and coast guard stations around the world.

+ Fast scrolling and zooming
+ Import and export GPX files
+ Screen lock to prevent accidental screen touches while recording a track
+ Shows speed and direction of travel, even while walking slowly
+ Support for GPS and Compass sensors, where available.
+ Placename index, works offline
+ Moving map, lock GPS position and automatically scroll the map
+ Records tracklogs with app running in the background
+ Create and edit marks, which may be linked to a web URL
+ Plan routes, measure distance and bearings
+ Routes snap to roads or trails, optimized for walking, cycling, or driving
+ Shows Altitude
+ Lat/Long, UTM, British National Grid and MGRS coordinate systems
+ Share position marks or tracklogs with other apps using GPX files
+ Connect to NMEA instruments and AIS via a WiFi gateway
+ AIS collision alarms, Anchor alarms and proximity alarms use notifications.

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

What’s New

Version 2.3.1

Added "Other -> Load Layout" button for switching between Nav data layouts
Added new "Instrument" Nav data items
Bug fixes

Ratings and Reviews

4.5 out of 5
33 Ratings

33 Ratings

HMB Sailor ,

Good pocket navigator

I use MM for sailing, in conjunction with other navigation tools. Never trust your boat & crew's safety to one method of determining your fix, but having said that, MM is a good nav program to have in your pocket.

Tgsocal ,

Good app, just needs a few more features

I use this app quite a bit for boating & hiking, found it to be the best for noaa & USGS topo maps when out of 3G area. You can pre-download entire areas of maps fairly easily which is necessary when in the back country or on the ocean. When you use the mobile version in conjunction with their PC software it's very nice keeping track of waypoints, routes and tracks. Import/export works well. Marine NOAA maps are free to download, but you have to pay to get many other maps (USGS topo, Delorme, etc). But for ~$20 or so per map region I don't think it's that unreasonable though.

I've compared many other topo apps, all of which seem to be lacking one feature or another. Memory map is worth the $$, but also lacks needed features. I end up having to use use it in conjunction with other apps, which is do-able but inconvenient. Would be much better if they could add a couple additional features, namely: 1) need ability to take photos within the app & tag them to waypoints/tracks... 2) Add 3D view (which is available in the PC version), or at minimum an option to view shaded relief via elevation data. Viewing topos in 3D/shaded relief really helps a ton, and seems it'd be fairly easy to add since they already have all the elevation data.

Overall good app, just needs more features

LCW Moviemaker ,

ver 1.5.0 works well

I have used Memory-Map for marine navigation for about 10 years, first on my laptop, then on a PDA, and now on my iPhone 3GS using version 1.5.0 of this app. Yes, there are a few things I'd like to see changed, but it works better and is MUCH cheaper than any of the 3 other Nav systems I used before this.
You can get USA marine charts for free from NOAA's download site. These raster scanned charts are updated as needed by NOAA. For charts of waters outside the US, you may have to buy them from commercial sources. (For my sailing in the Caribbean, I still use old raster charts I got 10 years ago. They still serve well because those islands don't move around much from year to year!)
It is great to have a moving chart plotter on board (my iPhone) that I can hold in my hand!
I recommend this app (ver 1.5.0) to sailors old and new.


Memory-Map, Inc.
6.5 MB

Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
This app may use your location even when it isn't open, which can decrease battery life.
In-App Purchases
  1. Import 3rd Party maps $12.99
  2. USGS Topo New England $9.99
  3. USGS Topo KY $9.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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