Spyglass vs Memory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spyglass
This app is a comprehensive offline navigation tool for outdoor and off-road adventures. It combines a high-tech compass, GPS receiver, and augmented reality display with numerous tools for tracking, measuring, and celestial observation.
- Offline GPS and maps
- Augmented reality display
- Advanced compass and gyrocompass
- Waypoint tracking and navigation
- Sun, Moon, and star finder
- Optical rangefinder
- Camera with GPS data overlay
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Spyglass is an essential offline GPS app for outdoors and off-road navigation. Packed with tools it serves as binoculars, heads-up display, hi-tech compass with offline maps, gyrocompass, GPS receiver, waypoint tracker, speedometer, altimeter, Sun, Moon and star finder, gyro horizon, rangefinder, coordinate converter, sextant, inclinometer, angular calculator and camera. It saves your custom places and waypoints, navigates precisely to them later, shows them on maps and using real-time augmented reality displays detailed GPS info, measures distances, sizes, angles, and does a lot more. COMPASS & GYROCOMPASS Accuracy improvement techniques, special compass modes and calibration methods available in Spyglass only make it a real instrument – the most advanced and accurate digital compass. FINDER, TRACKER & AR NAVIGATION Spyglass operates in 3D and uses augmented reality to show real-time object positions, info and directions to them overlaid over camera or maps. Save current position, add points from maps, manually enter location coordinates and bearings, add stars by hand or use a built-in star catalogue. Find saved places and objects later simply by following directional arrows. Spyglass tracks multiple targets simultaneously and shows their info – distance, direction, azimuth, elevation and estimated time of arrival. Copy, paste and share locations, coordinates and map links using many supported formats. GPS, SPEEDOMETER & ALTIMETER Find and track your location and get detailed real-time GPS data – coordinates in dozens of formats, altitude, course, current, maximum and vertical speed, using imperial, metric, nautical and surveying units. OFFLINE MAPS See your and targets’ positions on maps using different map styles and alternative map providers – plan waypoints and measure distances. Offline maps optimized for retina displays are available for download. TRACK STARS, SUN AND MOON & NAVIGATE BY STARS Track positions of stars, Sun and Moon with arc second precision – use them as a reference to calibrate compass for maximum accuracy. OPTICAL RANGEFINDER Measure distances to objects in real time with a rangefinder reticle similar to sniper sights. SEXTANT, ANGULAR CALCULATOR AND INCLINOMETER Find out heights of objects and distances to them – measure visually and calculate dimensions and distances. CAMERA Take pictures overlaid with all available GPS, positional and directional data. DEMO & HELP Videos: http://j.mp/spyglass_vids Manuals: http://j.mp/spyglass_help If you need specific map sources for hiking, cycling, skiing and many more outdoor activities, feel free to enjoy Spyglass PLUS. At confirmation of the Spyglass PLUS purchase, payment will be charged to your iTunes account, and it will be charged for renewal within 24-hours before the end of the current period. Automatic renewal can be turned off at any time in your Account Settings after purchase. After the cancellation of the renewal, Spyglass Plus will expire at the end of the current period. If you have any questions or comments, feel free to contact us at https://spyglassnav.com Privacy Policy: https://www.unblip.com/tmp/privacy_and_terms/privacy.html Terms of Use: https://www.unblip.com/tmp/privacy_and_terms/terms.html
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 Spyglass's 4. Memory also leads on ads (none vs shown) and rating (4.9 vs 4.7). Spyglass's advantage is ratings volume (3.9K vs 10) and chart position (#128 vs unranked). On price, review sentiment, update cadence 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. Spyglass sells 4 in-app purchases, starting at $3.99 per month. Memory asks for nothing beyond the download.
Memory holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Spyglass has 3.9K ratings behind it against 10, so its average is the more settled of the two. Written reviews split almost evenly too, at 80% and 80% positive.
Spyglass ships an update every 6 weeks, Memory every 3 months. Both last shipped on September 22, 2026.
| Parameter | Spyglass | Memory |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3.9K ratings) | 4.9 (10 ratings) — better |
| Positive reviews | 80.2% of reviews | 80.2% of reviews |
| Number of ratings | 3.9K — better | 10 |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #128 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.4 — better | 14.0 |
| Further details — not scored | ||
| Size | 66 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Pavel Ahafonau | Memory-Map |
Customer experience
Spyglass
Memory
User reviews
Spyglass
From 3.9K App Store ratingsWhat we love
- 🗺️ Excellent navigation and mapping features
- 🔍 Highly accurate compass and location tracking
- 🔭 Useful augmented reality and sextant functions
- 📸 Ability to capture geotagged photos
- 🛠️ Comprehensive set of tools and utilities
Room to improve
- 🔋 High battery consumption
- 🤔 Steep learning curve and complex interface
- 🗺️ Outdated or incomplete map data in some regions
- 🐛 Occasional bugs and crashes reported
- 💰 Subscription model for advanced features
Memory
From 10 App Store ratingsWhat we love
- 🗺️ Excellent map quality and detail
- 📥 Offline map download capability
- 💰 One-time purchase option (no subscription)
- 🔄 Cross-device sync functionality
- 🧭 Comprehensive navigation features
Room to improve
- 🐛 App closing issues (swipe-up doesn't work properly)
- 🚗 No Apple CarPlay integration
- 🧩 Non-intuitive user interface
- 🔄 Slow feature development over years
- 📱 Dynamic Island compatibility issues
Bugs and requests
Spyglass
Reported bugs
3 issues- Compass not always accurate or consistent
- Freezing or unresponsive issues after updates
- Difficulty syncing waypoints and locations
Requested features
5 requests- Improved waypoint and location management
- Larger text and UI elements for better readability
- Integration with popular mapping and navigation apps
- Offline elevation data and terrain analysis
- Apple Watch companion app for on-the-go use
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
Spyglass
- Spyglass Plus$3.991 Month
- Spyglass Plus (Month)3 Days trial$3.991 Month
- Spyglass Plus (Year)7 Days trial$29.991 Year
- Spyglass Pro (Lifetime)$39.99
Memory
No in-app purchases









