AngelNav vs Memory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AngelNav
This app allows sailors to perform traditional navigation directly on their device, offering a digital alternative to paper charts and instruments. It supports various chart types and integrates with GNSS data for real-time navigation, with options for advanced features and chart subscriptions.
- Traditional navigation techniques on screen
- Full chart plotter with raster chart support
- GNSS data integration (GPS, NMEA, SignalK)
- AIS target display
- Waypoint and route management
- Track recording and display
- Simulation mode
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AngelNav is a new app for iOS developed in collaboration with Tom Cunliffe. Primarily it is a full chart plotter currently favouring raster charts, but it has many additional features including the ability to carry out traditional navigation directly on the screen. The capacity to generate classical chart work is vitally important in the event of a GPS failure, but hitherto has required pencil, plotters, and paper charts. AngelNav allows traditional techniques to be carried out using an iPad or iPhone screen instead of a paper chart. An estimated position can be plotted, position lines drawn from sighted bearings and fixes recorded. Course-to-steer diagrams are readily constructed. AngelNav can read most types of raster chart including the UKHO subscription charts, as well as KAP/BSB files and GeoTIFF files. It can easily create georeferenced satellite charts for offline use. AngelNav can take GNSS navigation data from a variety of sources, including the device's stand-alone GPS, the boat's NMEA over WiFi, and SignalK. It will also display AIS information if available. Annual subscriptions are available as in-app purchases for UKHO, SHOM, and Imray charts covering the whole of the UK, France, Spain, the Mediterranean and the Caribbean. These are divided into folios so that you can subscribe only to the charts that you need. The app is free to use in its basic form, with additional functions and charts available as in-app purchases. This allows a user to fully evaluate the app without charge, and then to purchase the features and charts required. Free features: Chart plotter (Demo chart included) Traditional navigation techniques Waypoints and Routes Track recording and display Reads navigational data Simulation mode Paid for features (in-app purchases): Open KAP/BSB files Open GeoTIFF files Open Satellite charts Display AIS targets (if AIS information is available) Tidal information for the British Isles Subscription Charts: Charts derived from UKHO data covering the coastal waters of the British isles, the Atlantic coast of Spain and Portugal including the Atlantic islands. SHOM charts of the coasts of France Imray charts of of the Mediterranean, Caribbean, and others Key features: Brand new app written from the ground up Carry out traditional navigation techniques on screen Free to download to for evaluation, with in-app purchases to add only the features required Frequent updates of subscription charts including handling of notice to mariners Custom keyboard for entry of waypoint latitude and longitude Open KPA/BSB and GeoTIFF files (in-app purchase required) Create Satellite charts for off line use (in-app purchase required) Display AIS targets on the chart (in-app purchase required) NOTE: The continued use of GPS running in the background can dramatically decrease battery life
Memory
Navigate anywhere with offline maps and GPS. Access a vast library of global maps, plan routes, and track your journey without a mobile data connection. Sync data across devices for seamless planning and navigation.
- Offline GPS navigation
- Downloadable global maps
- Route planning and editing
- 3D World map view
- Interactive terrain elevation profiles
- Cloud sync across devices
- GPX file import/export
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Download maps for Offline GPS Navigation. No mobile data connection required. Your favorite maps and charts from OS, Hema, NOAA, and many more. Immersive 3D World map view Fully customizable map, data display and toolbar buttons. Powerful overlay data management, using nested categories and GPX files Backup and load maps from thumb drive. Use the same maps and sync your overlay data to other mobile devices and desktop computers Interactive Route Profile showing terrain elevation Track Altitude and Speed profile graphs Show terrain ascent, descent, max elevation and estimated time for planned route The Memory-Map for All app turns your phone or tablet into a full-featured Outdoor GPS or Marine Chart Plotter, and allows you to navigate with USGS Topo maps, NOAA Marine charts, and many other specialist maps, without needing a mobile internet signal. Maps are downloaded on-the-fly and can be pre-loaded in bulk, so they are ready to be used offline. Once the app and maps are loaded to the phone or tablet, cellular network coverage or internet connection is not required for real time GPS navigation. The Memory-Map for All app can be used as a standalone GPS navigator, but it can also be used in conjunction with the Windows PC or Mac app (free download) for planning, printing and loading up maps, waypoints and routes to the phone/tablet. Memory-Map for All includes free access to 1:250,000 scale topographic maps and many other free maps around the world. More detailed maps are available for download and purchase with a free try-before-you-buy, time-limited demo option. Available maps include Ordnance Survey, Hema, USGS quads, NOAA, UKHO, and DeLorme. Maps can be used on your PC as well as your phone and tablet. The Cloud Sync feature allows you to keep the overlay data consistent on all your devices. Features include: Access a vast range of Worldwide maps and charts. Automatically downloads a free map of your current location Create and edit marks and routes. Import and export marks, routes and tracks in the open GPX format Interactive graphs of terrain elevation, GPS Altitude and Speed profile Display; Position, Course, Speed, Heading, Altitude and averages Position coordinates include Lat/Long, UTM, GB Grid, Irish Grid, Military Grid. Units displayed in Statute, Nautical or Metric, with separate unit setting for Height Support for GPS and Compass sensors, where available. Placename search index can be used offline. Moving map, lock GPS position and automatically scroll the map Records breadcrumb trail / tracklogs. Share position marks, routes and tracklogs as GPX files Full marine instrumentation features, with AIS, DSC and Anchor alarm NMEA data interface via WiFi for marine instruments Barometer & relative altitude Import custom icons for POI Alarms for mark proximity, Anchor, Geofence or Exclusion zone, Crostrack error
Screenshots
Verdict
The clearest difference is in-app purchases: Memory at none against AngelNav's 23. Memory also leads on ratings volume (10 vs 2). AngelNav's advantage is update cadence (every 5 weeks vs every 3 months). On price, rating, review sentiment and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. AngelNav sells 23 in-app purchases, starting at $24.99 per year. Memory asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for AngelNav against 4.9 for Memory. That said, the two scores are not equally well evidenced: Memory has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 75% of AngelNav's written reviews are positive against 80% of Memory's.
AngelNav ships an update every 5 weeks, Memory every 3 months. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.
| Parameter | AngelNav | Memory |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.9 (10 ratings) |
| Positive reviews | 75.0% of reviews | 80.2% of reviews — better |
| Number of ratings | 2 | 10 — better |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 14.0 — better |
| Further details — not scored | ||
| Size | 120 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | SailTrack Limited | Memory-Map |
Customer experience
AngelNav
Memory
Bugs and requests
AngelNav
Not enough reviews yet to summarise bugs or requests.
Memory
Reported bugs
10 issues- App won't close properly with swipe-up gesture on iPhone
- Startup error message about improper closure
- Maps fail to download on new devices
- GPS location not detected on iPad despite enabled settings
- App switching gesture interferes with map centering
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- Dynamic Island doesn't show navigation instructions
- Zoom limits restrict detailed trail viewing
- Auto map change on zoom behaves unexpectedly
- Help function is inadequate/useless
- Cut-and-paste doesn't work on Mac desktop application
Requested features
14 requests- Apple CarPlay support
- Map auto-rotation to direction of travel
- More custom waypoint icons (food drop, water source, campsite, etc.)
- Better route optimization with more waypoints
- Map orientation options (North-up vs. route-up)
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- Postcode and OS grid reference search
- Location beacon within software
- More detailed maps for Australian regions (SA, NT)
- Foreign/European map availability
- Historical map access
- Font size control for map labels
- Bulk waypoint customization on import
- Course heading-up feature
- Built-in POI overlay list
In-app purchases
AngelNav
- UKHO BF1$24.991 Year
- UKHO BF3$24.991 Year
- UKHO BF8$24.991 Year
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- UKHO AO2$24.991 Year
- UKHO MS2$24.991 Year
- UKHO MS1$24.991 Year
- UKHO MS3$24.991 Year
- SHOM FF2$24.991 Year
- UKHO BF7$24.991 Year
- UKHO.BN1$24.991 Year
- SHOM FF4$24.991 Year
- Imray ID100$69.991 Year
- Imray ID40$69.991 Year
- Imray ID70$69.991 Year
- Imray ID60$69.991 Year
- UKTides 24$1.99
- KAP files$4.99
- Satellite charts$4.99
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- AIS$4.99
- Instruments$4.99
- GeoPDF files$4.99
- GeoTIFF files$4.99
- BITides 25$6.99
Memory
No in-app purchases









