MMDG BLE vs Sail With Dan
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
MMDG BLE
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Marine Mobile Digital Gauges bluetooth low energy display application helps you to choose between different display variants: black gauges style(default) white gauges style black digital display white digital display Also new add ons for selecting measurement units for: GPS speed : km/h(default) or knots fuel consumption : l/h(default) or gal/h temperature: Celsius(default) or Fahrenheit You have enable bluetooth access and GPS speed to use all the features of this application. Known errors: 1. if there is no MMDG device connected and you try to connect to an unrecognised bluetooth device, the app will end. You need to stop the app and restart app. 2. if you try to connect to an MMDG which is not connected to the engine, the app will retry to connect but because there is no data coming from MMDG it will refresh after few seconds. As soon as connection is established correctly there is no known error. Please report in comments possible errors found.
Sail With Dan
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Sail With Dan is your essential helm instrumentation for coastal sailing. Speed, course, wind, and your next tack are all visible on a single screen. Built for real sailors, the app provides data exclusively in knotsβno tourist units. The app does not use hidden paywalls for basic tools. A single subscription unlocks the complete feature set immediately. WHAT YOU GET Helm Instruments: Live SOG and COG from your phoneβs GPS, alongside a dedicated magnetic compass page. Drift Calculation: A single, clear angle (Heading vs. COG) showing the combined effect of wind and current directly at the helm. Apparent Wind (AWA/AWS): A classic i60-style apparent wind instrument and wind dial for quick readability. Marine Weather: 7-day wind and wave forecasts powered by professional models (ECMWF, ICON, ARPEGE, GFS, and regional high-resolution models). Compare models side-by-side with the data source always clearly identified. GOTO & Passage Planning: Plan first, sail later. Whether you are sailing dead upwind, downwind, or under engine, the app automatically draws the optimal beat, gybe, or rhumb line. Smart Shore Check: Automatically prevents planned tacks from being drawn across land boundaries. (Note: does not detect rocks, shoals, or marine traffic). Coastal Distance Boundaries: Visual reference bars at 3, 6, or 12 NM from the OSM shoreline (for spatial awareness, not a legal baseline). Chart Tools: A two-tap chart ruler to instantly measure rhumb-line miles and bearings, plus interactive map objects (tap a buoy or charted area to see its name). Safety Features: An anchor watch alarm to wake you if the boat drags, and a one-tap Man Overboard (MOB) button to instantly mark your last GPS fix and guide you back. Tracks & Logbook: Record your tracks, export them as GPX/KML, and maintain a daily logbook. Includes a private catch log for your fishing trips. Night Mode: A red-on-black interface to preserve your night vision in the cockpit. Languages: English, Italian, Spanish, and Greek. SUBSCRIPTION & PRICING Access to the complete app requires an auto-renewable subscription. The lifetime purchase option is no longer available. Weekly Full Access: $4.99 / week Monthly Full Access: $9.99 / month (includes a 3-day free trial) Yearly Full Access: $59.99 / year (includes a 3-day free trial) Subscription Details: The local price applies as shown in the app and on the App Store. Payment will be charged to your Apple ID at confirmation of purchase. The subscription automatically renews unless cancelled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription anytime in your device's Apple ID > Subscriptions settings. If you purchase the monthly or yearly plan during the free trial, any unused portion of the trial will be forfeited. Use the "Restore Purchases" button in the app if you change devices. NOT FOR PRIMARY NAVIGATION This application is an aid for situational awareness only. It is not a substitute for official paper or approved electronic navigation charts, a visual lookout, or a dedicated echo sounder. Depth and seabed data (for Europe) are generated via mathematical models, not direct surveys, and must absolutely not be used for shallow-water navigation. You are solely responsible for the safe navigation of your vessel. Technical Note: An internet connection is required to download new map tiles and fetch updated weather forecasts. Recently viewed sea areas remain cached on your phone for offline use. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.sailwithdan.app/en/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: MMDG BLE at none against Sail With Dan's 3. MMDG BLE also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Sail With Dan's advantage is update cadence (every 5 days vs every 3 months). On price and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Sail With Dan sells 3 in-app purchases, starting at $4.99 per 7 days. MMDG BLE asks for nothing beyond the download.
MMDG BLE ships an update every 3 months, Sail With Dan every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | MMDG BLE | Sail With Dan |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 5 days β better |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 18 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Boicu | Danilo vaccalluzzo |
In-app purchases
MMDG BLE
No in-app purchases
Sail With Dan
- Weekly Plan$4.997 Days
- Monthly Plan$9.991 Month
- Annual Plan7 Days trial$59.991 Year
Questions
Is MMDG BLE free?
Is Sail With Dan free?
Do MMDG BLE or Sail With Dan have ads?
Which is updated more often, MMDG BLE or Sail With Dan?
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