Comparison

DONIA vs Imray Navigator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DONIA

This app provides detailed seabed visualization and marine information for safe and respectful sea navigation. It allows users to book mooring buoys, share observations, and monitor their vessels. Access premium features like high-definition charts for enhanced planning and exploration.

Highlights
  • Seabed visualization
  • Marine information access
  • Mooring buoy booking
  • User observation sharing
  • Navigation preparation and monitoring
  • Mooring monitoring with alarms
  • Offline mapping
Features
Read full description

DONIA – Enjoy & protect the sea, together Donia is the reference app to choose your anchorages and navigate safely while minimizing your impact on the seabed. Join a community of over 100,000 sea enthusiasts who use DONIA to plan and experience their journeys across the Mediterranean and beyond. *** Visualize the seabed and anchor in the right place *** • High-precision mapping of marine habitats (Posidonia, coralligenous reefs, Cymodocea, sand and rock)
• Enhanced anchoring assistance with weather conditions
• Improved anchor alarm system
• Smart selection of anchoring zones adapted to your vessel *** Complete nautical charts *** • Detailed mapping of navigation areas (French Mediterranean, Atlantic, Greece, Andalusia, Liguria, Croatia, Balearics)
• Advanced integration of SHOM charts and HD bathymetric layers (Premium)
• Optimized map display for real-time navigation *** A community of sailors *** • View and share sea observations
• Rating system and favorites
• Easy sharing inside and outside the app *** Donia Mooring – connected buoys *** • Connected mooring buoys for vessels over 24m
• Dedicated anchoring zones
• In-app booking, payment and management *** DONIA Premium *** • Advanced SHOM chart integration
• Access to HD bathymetric layers A mission: protecting the sea Created by marine biologists and divers from Andromède Océanologie, DONIA aims to make seabed maps visible and accessible so everyone can contribute to their protection. Inspired by maritime solidarity, the app continuously evolves based on user feedback to become a more innovative, useful and effective anchoring tool. Information Using GPS in the background may significantly reduce battery life.
 Your subscription renews automatically unless you cancel it at least 24 hours before the end of the current billing period. Payment will be charged to your iTunes account upon confirmation of purchase. You can manage your subscriptions and turn off automatic renewal in your account settings after purchase. Privacy Policy: https://mooring.donia.fr/cgv/donia/cgv-donia-fr.pdf Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Imray Navigator

This marine chart plotter provides nautical charts for various sea activities. Plan passages, create routes, and share tracks. Offers GPS, tides, and AIS integration for comprehensive navigation.

Highlights
  • Nautical charts from Imray and other publishers
  • Passage planning and route creation
  • Share tracks and waypoints
  • GPS and instrument integration
  • Tides and AIS functionality
  • Quarterly chart updates
Features
Read full description

Imray's marine chart plotter for sailors, divers, canoeists, fishermen and anyone involved with making way at sea. Nautical charts by Imray and other publishers Easy to use for passage planning and route creation Keep up to date with new chart subscriptions for the latest data Plan your routes and share tracks and waypoints with your crew or friends Based on the award-winning Marine Imray Charts app Technical support for this app is available to subscribers. Email support@imray.com FEATURES - Award winning raster charts from Imray and other Hydrographic Offices - Auto-renewable 12-month subscription includes quarterly updates with new chart editions, notes and corrections. - Waypoints - Routes: distances, targets, bearings - Position and destination - Course to steer, speed and bearing - Magnetic compass - Distances, bearings from any point to any point - Electronic bearing line - GPS and instruments - Tides with full functionality from Tides Planner app - AIS and NMEA functionality from Boat Instruments app - Aerial photographs (subject to coverage) and harbour plans - Tracks that you can share with friends Download Chart Sets from the Chart Store in the app. Warning: Continued use of WiFi and of GPS running in the background can dramatically decrease battery life. COVERAGE (CHART SETS) Tap on the i icon in the Chart Store in the free app to see more detail of coverage areas. Imray Charts free app: English Channel passage charts. Imray ID10 North Sea Imray ID20 English Channel England and France. Imray ID30 West coast England, Wales, west coast Scotland, Ireland. Imray ID40 Atlantic France, Iberia and Atlantic Islands. Imray ID50 Western Mediterranean. Gibraltar to Sicily. Imray ID60 Central Mediterranean. Adriatic and Ionian Seas. Imray ID70 Eastern Mediterranean and Aegean Seas. Imray ID80 Netherlands Imray ID100 Eastern Caribbean. Virgin Islands to Grenada and Barbados. Also chart sets derived from official Hydrographic Office charts of Germany, France and the Netherlands. Tides - inherits permissions (beyond one day predictions) from the Tides Planner app if installed on the same device. LANGUAGES English, Dutch, French, German, Italian and Spanish SUBSCRIPTIONS TO CHART SETS Before taking out a subscription to Imray Navigator chart sets, please check that your device meets the minimum operating system requirements (Apple iPhone and iPad running iOS8 and higher). A subscription to a Chart Set covers a 12 month period from the date of purchase. During this period, you will receive 3 further quarterly updates, which will include new chart editions, notes and corrections/updates for that area where available from the publishers. Your subscription will automatically renew unless auto-renew is turned off in your Account Settings at least 24-hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current subscription period. The cost of the renewal is the same as your current yearÕs subscription. You can manage your subscription and you may switch off auto-renewal by going to your Account Settings in iTunes after purchase. PRICES AND PAYMENTS The price of a year's subscription is indicated in the Chart Store section of the app. The price of your Imray Navigator subscription will be charged to your iTunes account at confirmation of purchase. Any unused portion of a free trial period, if applicable, will be forfeited when the user purchases a subscription to that Chart Set. Manage your subscription in iTunes after purchase. Privacy policy https://www.imray.com/privacy Terms and Conditions of use https://www.imray.com/terms ABOUT US Imray is the leading publisher of nautical charts, books and apps. Our charts, designed and published in England, feature popular, carefully edited and award-winning cartography. Twitter @imray_charts Facebook @imraynautical

Screenshots

DONIA4 screens
Imray Navigator4 screens

Verdict

The call

The clearest difference is rating: DONIA at 4.5 against Imray Navigator's 1.0. DONIA also leads on review sentiment (59% vs 20%) and monetization model (freemium vs subscription). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DONIA sells 2 in-app purchases, starting at $2.49 per month and Imray Navigator sells 12 in-app purchases, starting at $37.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DONIA holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 31 and 7 respectively. Written reviews point the same way: 59% of DONIA's written reviews are positive against 20% of Imray Navigator's.

UpkeepUpdate frequency

DONIA ships an update fortnightly, Imray Navigator every 2 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

Scorecard5 real differences · 5 level
DONIA versus Imray Navigator: the parameters behind the verdict, then further details
ParameterDONIAImray Navigator
PriceFreeFree
Rating4.5 (31 ratings) — better1.0 (7 ratings)
Positive reviews59.3% of reviews — better19.6% of reviews
Number of ratings31 — better7
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size61 MB167 MB
Age rating4+4+
DeveloperAndromede OceanologieFB Imray Laurie Norie & Wilson GmbH

Customer experience

DONIA

All ratings31 ratings
Positive87.1%
Neutral0.0%
Negative12.9%
Written reviews27 reviews
Positive59.3%
Neutral22.2%
Negative18.5%

Imray Navigator

All ratings7 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews46 reviews
Positive19.6%
Neutral8.7%
Negative71.7%

In-app purchases

2 purchases

DONIA

Subscriptions2
  • DONIA® Premium Monthly7 Days trial$2.491 Month
  • DONIA® Premium Version7 Days trial$22.991 Year
12 purchases

Imray Navigator

Subscriptions12
  • SHOM1 Biscay$37.991 Year
  • SHOM2 Med France & Corsica$37.991 Year
  • NL1800 Netherlands$37.991 Year
Show 9 more
  • Imray ID10 North Sea yearly subscription$39.991 Year
  • Imray ID20 English Channel yearly subscription$39.991 Year
  • Imray ID40 Atlantic France, Iberia and Atlantic Islands yearly subscription$39.991 Year
  • Imray ID50 West Mediterranean yearly subscription$39.991 Year
  • Imray ID60 Central Mediterranean yearly subscription$39.991 Year
  • Imray ID70 East Mediterranean yearly subscription$39.991 Year
  • Imray ID100 East Caribbean yearly subscription$39.991 Year
  • Imray ID30 West Britain and Ireland yearly subscription$39.991 Year
  • SHOM3 North France$44.991 Year

Questions

Is DONIA free?
DONIA is free to download, with in-app purchases available.
Is Imray Navigator free?
Imray Navigator is free to download, with in-app purchases available.
Which has better reviews, DONIA or Imray Navigator?
DONIA is rated higher. DONIA averages 4.5 out of 5 from 31 ratings, while Imray Navigator averages 1.0 from 7 ratings.
Do DONIA or Imray Navigator have ads?
Neither DONIA nor Imray Navigator shows ads.
Which is updated more often, DONIA or Imray Navigator?
DONIA ships an update fortnightly, and Imray Navigator every 2 months. Most recently, DONIA was updated on September 22, 2026 and Imray Navigator on September 21, 2026.

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