Avalon Offshore vs TideWorld
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Avalon Offshore
This app provides advanced weather routing and navigation for sailors. It offers detailed weather forecasts from numerous models, collision alerts, and route optimization based on boat draft. Compatible with various nautical maps and augmented reality glasses.
- Advanced weather routing
- NMEA 0183 and AIS integration
- Collision alarm
- Regatta start management
- 65 automatic weather models
- Bathymetric routing
- Navionics Boating map compatibility
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Avalon Offshore is a complete weather routing and navigation application . It works on iPads and iPhones. It also works on the new generation of Macbook Air and Pro,equipped with an ARM 64 chipset. Avalon Offshore integrated the whole set of functions that are useful to cruisers and offshore racers; weather routing, weather, navigation with NMEA 0183 and AIS collision alarm, anchoring alert, regatta start management wit laylines, etc… Avalon includes automatic loading of 65 weather models: NOAA GFS, Metro France Arpege,and Arome, DVD Icon, OpenWRF Skiron, etc Avalon also includes advanced functions such as: - Bathymetric weather routing, allowing calculation of routes taking into consideration the draft of the boat. - Simultaneous comparaison of routes across different weather models, different routes options, etc… - Free use of Avalon VPP to calculate customised VPP polars for single hull boats (main sail + genoa, code 0, gennaker, spinnaker, staysail and mizzen sail. - High compression of weather data on several models (GFS, Arpege, Icon, NAM Caraïbes et USA East) enabling to reduce by up to 95% volume of data, very efficient for satellite transmission (Iridium Go, Iridium Inmarsat, etc) - Easy weather routing module (from harbor to harbor) for a quick start of the app. - Compatible with ©Navionics Boating maps without additional cost. - Interfaced with ©Navily for a quick selection of the best moorings and harbors. - On time arrival : Calculate departure time to arrive on a given time - Compatible with ActiveLook® Augmented Reality glasses VPP Polars - Free use of Avalon VPP to customize your boat velocity preduction and adapt them to the exact caracteristics of your boat - Polar captation at sea Nautical Maps - Free raster nautical maps: NOAA, Linz, Brasil, New Zealand - In-app pack of maps derived from UKHO or SHOM covering France, UK Belgium, Portugal, Spain Carribean, Eastern and Western Mediterranean, Transatlantic, ... - Personal maps support: mbtiles, tif, kap, geotiff - Navionics maps: You can use your Navionics Boating maps with Avalon free of charge. Weather Sources - 65 automatic weather sources (wind, gust, current, wave and general weather) included in the Premium Option (in-app purchase) - Capability to load external grib files (as an alternative to the Premium option) - Capability to load external current grib from Tidetech® Includes one month free use of Premium options (see below) IN-APP PURCHASE: PREMIUM OPTION Includes: - Iridium data compression (reduce by 6 transmitted volumes) - additional weather sources: Arome, Arpege, NAM, CEP, Skiron .... - Weather data up to 394 hours including Wind, Gust, Waves, Precipitation, Storms, Cloud Coverage, Pressure, Temperature - Integration of currents in route calculation in covered areas (worldwide, Iberia Biscay and Ireland and Mediterranean sea) - Waves (Swell and wind waves) Privacy Policy and Terms of Use at: http://www.avalon-routing.com/new/privacy/ Warning: Continued use of GPS running in the background can dramatically decrease battery life. Policy and Terms of Use at: http://www.avalon-routing.com/new/privacy/
TideWorld
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Times, heights over 800 ports in the world. The list is given to http://christian-guine.fr:8082/TideWorld.html Application made from the harmonic constants provided by BODC or calculated from water level histories All displayed local time, are in the summer and winter hours. No use of geolocation data outside the application and only to locate the nearest port. The menu is used to calculate the tides and to give specifics on a day or month. Choose your own threshold (minimum height for sailing or fishing for maximum distance). Enter a head of water and set schedules for which it will be reached or for such time before any water depth. Thank you to share your comments to further improve the application.
Screenshots
Verdict
The clearest difference is price: TideWorld at $1.99 against Avalon Offshore's $35.00. TideWorld also leads on in-app purchases (none vs 21). On update cadence, ads, device support and iOS requirement 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
Avalon Offshore costs $35.00 and TideWorld $1.99 up front. Avalon Offshore sells 21 in-app purchases, starting at $39.99 per year. TideWorld asks for nothing beyond the download.
Avalon Offshore ships an update every 3 weeks, TideWorld every 4 weeks. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.
| Parameter | Avalon Offshore | TideWorld |
|---|---|---|
| Price | $35.00 | $1.99 — better |
| Positive reviews | 75.0% of reviews | — |
| Update frequency | Every 3 weeks — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 66 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Avalon Navigation Systems | Christian Guine |
In-app purchases
Avalon Offshore
- Premium Subscription$39.991 Year
- England and Ireland South 2024$29.00
- Portugal and Spain North 2024$29.00
- East Mediterranean 2024$29.00
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- Transatlantic Islands 2024$29.00
- West Mediterranean 2024$29.00
- Benelux and England East 2024$29.00
- East Mediterranean 2023$39.00
- Benelux and England East 2022$39.00
- England and Ireland South 2023$39.00
- Transatlantic Islands 2023$39.00
- West Mediterranean 2023$39.00
- Portugal and Spain North 2023$39.00
- UK and Ireland 2024$39.00
- UK and Ireland 2023$49.00
- France Mediterranee 2023 SHOM$99.99
- Lesser Antillas 2023$99.99
- SHOM 2024 - France Med$99.99
- Lesser Antillas 2024$99.99
- SHOM 2024 - France Manche$99.99
- SHOM 2024 - France Atlantique$99.99
TideWorld
No in-app purchases
Questions
Is Avalon Offshore free?
Is TideWorld free?
Do Avalon Offshore or TideWorld have ads?
Which is updated more often, Avalon Offshore or TideWorld?
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