Avalon Offshore is a weather routing and navigation app for sailboat cruisers and offshore racers.
Avalon integrates all the functionalities that a skipper may require in one single app.
- Weather routing with multi sails handling and mixed sailing motoring route calculations.
- customized VPPs or selection amongst 450+ preloaded boats
- Navigation (with AIS and NMEA support)
- Iridium support with highly compressed weather sources (6 times vs traditional transmission mechanism)
- Support Iridium avec source météo spécifique à tres haute compression des données.
- Raster nautical maps: Free charts (NOAA, Linz, ... ) or in-app pack of maps derived from UKHO or SHOM)
- Personal maps: mabtiles, tif, kap, geotiff
- Navionics maps: You can use your Navionics Boating maps with Avalon.
- General weather: Temperature, rain, cloud coverage, thunderstorm, pressure, ...
- Anchoring alarm
- Regatta module: Start management, lay lines, etc
- Virtual regattas with special weather sources adapted to the game.

Warning: Continued use of GPS running in the background can dramatically decrease battery life.

Includes one month free use of Premium options

- Iridium data compression (reduce by 6 transmitted volumes)
- additional weather sources: Arome, Arpege, NAM, CEP, ....
- Weather data up to 384 hours including Wind, Gust, Waves, Precipitation, Storms, Cloud Coverage, Pressure, Temperature
- Integration of sea streams in route calculation in covered areas (worldwide, Iberia Biscay and Ireland, Baltic and Mediterranean sea)
- Waves (Swell and wind waves)
Price: €24.00
Yearly subscription
Payment will be charged to iTunes Account at confirmation of purchase
Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
No cancellation of the current subscription is allowed during active subscription period

Privacy Policy and Terms of Use at:

What’s New

Version 3.8.3

Automatic connection to Iridium Go! devices
AIS improvements


100.6 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.


English, French

Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2019 Avalon Navigation Systems
In-App Purchases
  1. Avalon Offshore Premium $23.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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