Comparison

DONIA vs Metro Dusseldorf Map

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

Metro Dusseldorf Map

Read full description

Interactive map of Dusseldorf Metro

Screenshots

DONIA4 screens
Metro Dusseldorf Map4 screens

Verdict

The call

The clearest difference is price: DONIA at Free against Metro Dusseldorf Map's $0.99. DONIA also leads on iOS requirement (15.0 vs 26.2). Metro Dusseldorf Map's advantage is in-app purchases (none vs 2). On ads 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

DONIA is free to download; Metro Dusseldorf Map costs $0.99 up front. DONIA sells 2 in-app purchases, starting at $2.49 per month. Metro Dusseldorf Map asks for nothing beyond the download.

Scorecard3 real differences · 7 level
DONIA versus Metro Dusseldorf Map: the parameters behind the verdict, then further details
ParameterDONIAMetro Dusseldorf Map
PriceFree — better$0.99
Rating4.5 (34 ratings) — better—
Positive reviews63.3% of reviews—
Number of ratings34 — better—
Update frequencyEvery 4 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size55 MB5 MB
Age rating4+4+
DeveloperAndromede OceanologieRazvan IVAN

In-app purchases

2 purchases

DONIA

Subscriptions2
  • DONIA® Premium Monthly7 Days trial$2.491 Month
  • DONIA® Premium Version7 Days trial$22.991 Year
None

Metro Dusseldorf Map

No in-app purchases

Questions

Is DONIA free?
DONIA is free to download, with in-app purchases available.
Is Metro Dusseldorf Map free?
Metro Dusseldorf Map costs $0.99, with no in-app purchases.
Do DONIA or Metro Dusseldorf Map have ads?
Neither DONIA nor Metro Dusseldorf Map shows ads.

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