Memory vs Anchor Alert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Anchor Alert
Monitor your boat's position and anchor status from anywhere. Set custom alerts for real-time and forecast conditions, and access detailed marine weather forecasts. Connects to your boat's N2K network or works independently.
- Anchor and boat position monitoring
- Customizable real-time and forecast alerts
- N2K DataHub integration
- PredictWind marine weather forecasts
- Local anchorage knowledge and reviews
- Works on and off the boat
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Get the best and newest Anchor App developed by the trusted world leaders in marine forecasting - PredictWind Monitor your boat from anywhere on your phone. Set alerts & monitor your boat at anchor, view live N2K data and weather forecasts, on or off the boat. Customise your alerts, then relax knowing your boat is in good hands, with Anchor Alert. * Monitor your Anchor and Boat Position - Set your anchor position and preferences in quick or advanced mode, then monitor your vessel and position history on the map. Can be used with just your Phone or connected to your N2K backbone and a PredictWind DataHub. * 3 Modes, Simple, Advanced or Datahub linked - Use Simple Mode to quickly drag the anchor into position and set a safe radius. Advanced allows you to manually enter data for increased accuracy. DataHub Link reads your N2K data and fills in the relevant info, then input how much chain you’ve let out, and you’re done! * Set Up Alerts - Use our preset alerts or customise your own real-time and forecast alerts. The DataHub allows Anchor Alert to read your boat’s N2K network and alert you when conditions move outside your specified safe limits. * Works On & Off The Boat - Monitor your vessel and receive alerts onboard via the DataHub’s Wi-Fi network, or head ashore and stay connected over your vessel's existing internet connection. The DataHub is compatible with the Iridium GO! exec and other satellite connections to keep you connected literally anywhere on earth. * Get PredictWind Weather forecasts - Know exactly what weather is headed your way, with highly accurate marine forecasts by PredictWind. View world-leading weather data with Daily Briefing, Tables and Graphs. * Find the best spots to Anchor with Local Knowledge - See anchorage ratings and reviews from other users to get the top tips and advice. Leave your Boat in Good hands with Anchor Alert by PredictWind. Terms & Conditions: The Anchor Alert App is not error or bug free. You agree to use the Anchor Alert App carefully and at your own risk. We disclaim all representations and warranties of any kind, expressed or implied, including, without limitation, the warranties of merchantability and fitness for a particular purpose. We are not liable for damages, direct or consequential, resulting from your use of the Anchor Alert App. You agree to defend, indemnify and hold us harmless from any claims, losses, liability costs and expenses (including, but not limited to, legal fees) arising from any such use. You acknowledge that you have only a limited, non-exclusive, non-transferable license to use the Anchor Alert App. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.predictwind.com/about-us/privacy-policy/
Screenshots
Verdict
The clearest difference is in-app purchases: Memory at none against Anchor Alert's 3. Memory also leads on review sentiment (81% vs 64%) and rating (4.9 vs 4.7). Anchor Alert's advantage is update cadence (fortnightly vs every 3 months). On price, ratings volume, ads and monetization model 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. Anchor Alert sells 3 in-app purchases, starting at $15.00 per month. Memory asks for nothing beyond the download.
Memory holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 10 and 12 respectively. Written reviews point the same way: 81% of Memory's written reviews are positive against 64% of Anchor Alert's.
Memory ships an update every 3 months, Anchor Alert fortnightly. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.
| Parameter | Memory | Anchor Alert |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (10 ratings) — better | 4.7 (12 ratings) |
| Positive reviews | 81.3% of reviews — better | 64.3% of reviews |
| Number of ratings | 10 | 12 — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 42 MB | 174 MB |
| Age rating | 4+ | 4+ |
| Developer | Memory-Map | PredictWind Limited |
Customer experience
Memory
Anchor Alert
Bugs and 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
Anchor Alert
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Memory
No in-app purchases
Anchor Alert
- Anchor Pro 1 monthly1 Month trial$15.001 Month
- Anchor Pro 3 monthly1 Month trial$29.003 Months
- Anchor Pro Yearly1 Month trial$99.001 Year









