Memory vs PRO CHARTS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Memory
Transform your device into an outdoor GPS or marine chart plotter with detailed offline maps. Track your location even without a signal, plan routes on your computer, and analyze your adventures. Trusted by professionals for various outdoor activities.
- Offline Topo and Marine Charts
- GPS Location Tracking
- Route Planning & Measurement
- GPX File Import/Export
- Tracklog Recording & Analysis
- NMEA/AIS Instrument Connectivity
- Coordinate System Support
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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. Features: + 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."
PRO CHARTS
Navigate marine environments with detailed nautical charts and route planning. Track your location, find friends on the water, and share your trip details for safety. Offline chart access ensures reliable navigation even without an internet connection.
- High-resolution NOAA nautical charts
- Offline chart access
- Waypoint and route creation
- Buddy tracking
- Float plan sharing
- Point-and-steer navigation
- Track recording
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MiraTrex PRO CHARTS™ is a powerful, yet easy-to-use marine navigation system. Whether you’re a fisherman, weekend cruiser, sailor, diver, jet-skier, or an offshore captain needing to find an exact location hundreds of miles offshore, PRO CHARTS™ will get you there and back home safely – with nothing more than your iPhone or iPad. Key Features: • High-resolution NOAA nautical chart coverage with depths for all U.S. coastal areas, the Great Lakes, major U.S. river systems, and Brazil plus global high-level nautical charts. Charts are automatically updated based on NOAA chart corrections. • Easy one-touch Waypoint and Route creation. Pre-plan your routes at home or create them at sea with equal ease. Just touch the screen to create new waypoints and routes. • Find your friends on the water. With our new Buddy-tracking feature, you can see and meet up with your friends while you’re out on the water. If you’re on your secret spot and don’t want to be seen, you can hide your location with the touch of a button. • Stay safe. Easily create and send a Float Plan of your trip to a friend or family member. Your Float Plan and location history can be forwarded to search and rescue personnel in case of an emergency. • Easy point-and-steer navigation. The red heading bug on the large on-screen compass always directs you to the next point on your route. Navigation is as easy as pointing your boat at the heading bug to stay on course. • No Network. No Problem. PRO CHARTS™ is designed so no internet connection is required to view your charts while out on the water. You simply download in advance any charts you’ll need at sea with the touch of a button. • Record your tracks. Track your position in real-time and later view your track history. • Fully indexed point of interest (POI) database including weather, aids to navigation (markers and lights), obstructions, tides, currents, your buddies, and more. Website: www.miratrex.com -------------------- Plans: Base app with limited features - Free 14 day trial of all premium features - Free All premium features (Monthly) - $2.99 All premium features (Annual) - $29.99 (Save 16%, about 2 months free) -Payment will be charged to your iTunes Account at confirmation of purchase. -Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current subscription period. -You will be charged for renewal within 24 hours prior to the end of the current period, for the same duration and at the current subscription rate for that product. -You can manage your subscriptions and turn off auto-renewal by going to your Account Settings in the Apple Settings app after purchase. -No cancellation of the current subscription is allowed during active subscription period. This does not affect your statutory rights. -Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. -We will be collecting information about your use of the app both when you are online and offline. To find out more please see our privacy policy. -------------------- By purchasing a subscription or downloading an app you agree that you have read and accept our Privacy Policy and Terms of Use. http://www.miratrex.com/procharts/terms-of-use/ http://www.miratrex.com/procharts/privacy/ NOTE: Continued use of GPS running in the background can dramatically decrease battery life. Though PRO CHARTS™ will function without a GPS as a chart reader, a GPS-enabled device is required for point-to-point navigation. Third-party Bluetooth GPS units are available to enable GPS for iOS devices such as WiFi-only iPads that do not include a GPS receiver. For offline use where no Internet connection is available, charts must be pre-cached while still on-line and connected, any charts downloaded while online will be available for offline use.
Screenshots
Verdict
Memory and PRO CHARTS both sit at 4.5 stars, but that hides the real split: 64% of Memory's written reviews are positive against 17% of PRO CHARTS's. Memory also leads on iOS requirement (11.4 vs 15.6). PRO CHARTS's advantage is ratings volume (8.5K vs 52) and chart position (#112 vs unranked). On price, rating, update cadence 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. Memory sells 16 one-off in-app purchases and PRO CHARTS sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.5 for Memory against 4.5 for PRO CHARTS. That said, the two scores are not equally well evidenced: PRO CHARTS has 8.5K ratings behind it against 52, so its average is the more settled of the two. Written reviews are what separate them: 64% of Memory's written reviews are positive against 17% of PRO CHARTS's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | Memory | PRO CHARTS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (52 ratings) | 4.5 (8.5K ratings) |
| Positive reviews | 64.3% of reviews — better | 17.2% of reviews |
| Number of ratings | 52 | 8.5K — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #112 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.4 — better | 15.6 |
| Further details — not scored | ||
| Size | 5 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Memory-Map | MiraTrex, Inc. |
Customer experience
Memory
PRO CHARTS
User reviews
Memory
From 52 App Store ratingsWhat we love
- 🚀 Excellent for navigation
- 👍 Reliable and dependable
- 💡 Detailed topographic and marine charts
- 🗺️ Offline map access
- 🗺️ Whole country maps available
Room to improve
- 🐛 Occasional crashes and freezes
- 🔍 Complicated licensing and map management system
- 💰 Expensive map purchases
- 🤖 Limited functionality on iOS compared to PC version
- 🗺️ Some maps are outdated
PRO CHARTS
From 8.5K App Store ratingsWhat we love
- 🚀 Great for navigation
- 🗺️ Helpful for coastal areas
- 👍 Useful app overall
Room to improve
- 🐛 Frequent crashes and glitches
- ⚠️ Subscription issues and hidden costs
- 🌐 Lacks coverage for non-US regions
- 🔒 Poor account management and support
Bugs and requests
Memory
Reported bugs
3 issues- Tracking stops when app is in background
- Map sections disappear after device upgrades
- Unresponsive UI elements on newer iOS devices
Requested features
6 requests- Automatic map updates
- Easier map licensing and management across devices
- Improved route planning and tracking features
- Compass and heading orientation
- Apple CarPlay integration
Show 1 moreShow fewer
- Ability to share routes and tracks
PRO CHARTS
Reported bugs
3 issues- Charts not loading or disappearing
- Subscription not recognized
- Login/account issues
Requested features
3 requests- Offline map downloads
- Depth and hazard data
- Better route planning tools
In-app purchases
Memory
- USGS Topo NY$9.99
- USGS Topo AK$9.99
- USGS Topo Atlantic$9.99
Show 13 moreShow fewer
- USGS Topo CA$9.99
- USGS Topo New England$9.99
- USGS Topo TX$9.99
- USGS Topo WA$9.99
- USGS Topo WV$9.99
- USGS Topo AZ$9.99
- USGS Topo WY$9.99
- USGS Topo FL$9.99
- USGS Topo GA$9.99
- Import 3rd Party maps$12.99
- DeLorme Topo Map CA$19.99
- DeLorme Topo Map ME$19.99
- Professional Features$49.99
PRO CHARTS
- 1 Year Auto Renewing Subscription14 Days trial$2.991 Month
- 1 Year Auto Renewing Subscription14 Days trial$29.991 Year
- Brazil - Nautical Charts$4.99
- 1 Year Subscription$29.99








