DONIA vs Taider
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Seabed visualization
- Marine information access
- Mooring buoy booking
- User observation sharing
- Navigation preparation and monitoring
- Mooring monitoring with alarms
- Offline mapping
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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/
Taider
Navigate the Masurian Lakes with detailed nautical charts. Discover depth, hazards, port information, and record your routes. Offers collision alerts and route planning tools for a safer and more enjoyable sailing experience.
- Detailed nautical charts of Masurian Lakes
- Depth, shallows, and underwater rock information
- Port layouts, prices, and moorage spots
- Collision alert system
- Route recording and replay
- Distance measurement and route planning
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The best nautical charts of masurian lakes in your phone. Depth, shallows, underwater rocks, port layouts and prices, moorage spots, colision alert, route record. Test for free. TAIDER is the best navigation application for Masurian sailors. The most accurate nautical charts on the market were created specifically to cover your needs. We have created innovative features to make sailing even more comfortable and safe. TAIDER is an irreplaceable application to find the right direction on the Masurian Lakes. What you get? + The best navigation charts of Masurian Lakes - TAIDER contains the best bathymetric charts, made on the basis of newest bathymetric surveys. Our charts cover all of the Great Masurian Lakes* and are very clear and intuitive in usage. Having them makes you able to sail even during the night or in the fog. On TAIDER charts you will find all necessary information like depth, ports layouts, jetty locations, moorage spots, silence zones, reeds, forests and buildings. + Unmarked hazards - TAIDER’s charts contains even that shallow places and stone reefs which have not been marked with buoys on the water. When sailing on Masurian Lakes, you don’t have to be limited by lateral marks. Feel safe and free to sail across all the Great Masurian Lakes. + Collision alert - TAIDER has an innovative warning system. You don’t have to frequently check your position on the map. TAIDER will warn you about nearby hazards by emitting a sound signal, and give you the time to correct your course. + Marinas information - Wonder which port fits your needs? TAIDER provides all information about available infrastructure, including port plans, mooring methods and prices. + Mooring spots - Masurian Lakes show their true beauty away from loud and crowded ports. TAIDER will show you all the best places for mooring at the shore. + Cruise info - TAIDER allows you to display and record your trail. After returning from a cruise, you can recall memories by replaying the route you have traveled on eg. using Google Earth. + Tools useful in cruise planning and navigation: route planning and distance measurement. *Bathymetric charts of lakes currently available in Taider app: Ryńskie, Tałty, Mikołajskie, Bełdany, Nidzkie, Roś, Tałtowisko, Jagodne, Boczne, Niegocin, Tajty, Kisajno, Dargin, Łabap, Dobskie, Mamry, Święcajty. More lakes soon.
Screenshots
Verdict
The clearest difference is monetization model: Taider at free against DONIA's freemium. Taider also leads on iOS requirement (11.4 vs 15.0). DONIA's advantage is update cadence (every 4 weeks vs every 2 months) and review sentiment (63% vs 50%). 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
Both are free to download. DONIA sells 2 in-app purchases, starting at $2.49 per month and Taider sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
DONIA ships an update every 4 weeks, Taider every 2 months. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.
| Parameter | DONIA | Taider |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (34 ratings) — better | — |
| Positive reviews | 63.3% of reviews — better | 50.0% of reviews |
| Number of ratings | 34 — better | — |
| Update frequency | Every 4 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 11.4 — better |
| Further details — not scored | ||
| Size | 55 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Andromede Oceanologie | Navcart sp. z o.o. |
Customer experience
DONIA
Taider
In-app purchases
DONIA
- DONIA® Premium Monthly7 Days trial$2.491 Month
- DONIA® Premium Version7 Days trial$22.991 Year
Taider
- Access for 365 days (promo)$0.99
- Access for 365 days (promo)$3.99
- Access for 365 days (promo)$7.99
Show 7 moreShow fewer
- Access for 7 days$9.99
- Access for 365 days (promo)$12.99
- Access for 365 days (promo)$14.99
- Access for 365 days (promo)$16.99
- Access for 14 days$17.99
- Access for 365 days (promo)$20.99
- Access for 365 days (promo)$24.99









