Weather4D Lite vs Avalon Offshore
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Weather4D Lite
Visualize complex atmospheric and oceanic data in 3D HD layers. Download and customize GRIB files from various models for detailed weather and sea condition forecasts. Compare different models and data types side-by-side.
- 3D HD weather data layers
- Automatic and manual animation
- Customizable GRIB file downloads
- Split-screen comparison (iPad)
- Multiple weather and oceanographic models
- Location-based forecasting
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Weather4D Lite is a powerful meteorological application based on atmospheric and oceanic data in GRIB format. It benefits from an interface derived from the “Routing & Navigation” version. View combined weather data displayed in 3D HD layers animated automatically or manually by sliding a finger on the screen. Use GFS model to get started. In addition, over 35 weather and oceanographic models are available with a yearly subscription (in-app purchase). Create your own geographical zones, select the models you need and download only the characteristics that matter to you: data type, resolution, periodicity, file size, etc. GRIB files can be downloaded anywhere through a regular or satellite internet connection. Split the screen (iPad only) to combine and/or compare: navigation and weather, weather and waves or currents, two weather models… The splitted screens can display charts at different scales. Create or import locations, combine them with GRIB forecast models and get a holistic view of the sea conditions. Default Models and Charts ———————————— GFS global forecast model at 0.25 °, 0.5 °, 1 ° and 2 ° resolutions. BING global chart OSM (Opens Street Map) global chart Optional Models (in-app purchase): ——————————————————— Weather -------- NAM USA GEM Global COAMPS Europe, West Atlantic, Central America, East Pacific ICON-EU Europe ARPEGE Global, Europe AROME France, Antilles, Guyane, Polynésie, Calédonie, Indien AROME HD France WRF France, Europe, Greece, NW Africa, Azores, Lesser Antilles, Greater Antilles Waves ------- MFWAM Global, Europe, France FNMOC WW3 Global, Europe Currents --------- MyOcean Global, IBI, NWS, Baltic, Med NCOM AMSEAS, USEAST, ALASKA, SOCAL, HAWAII
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/
Screenshots
Verdict
The clearest difference is price: Weather4D Lite at $17.99 against Avalon Offshore's $35.00. Weather4D Lite also leads on chart position (#139 vs unranked). Avalon Offshore's advantage is update cadence (every 3 weeks vs every 2 months). On review sentiment, 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
Weather4D Lite costs $17.99 and Avalon Offshore $35.00 up front. Weather4D Lite sells 2 one-off in-app purchases and Avalon Offshore sells 21 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.
Weather4D Lite ships an update every 2 months, Avalon Offshore every 3 weeks. The most recent releases landed on October 19, 2026 and October 8, 2026 respectively.
| Parameter | Weather4D Lite | Avalon Offshore |
|---|---|---|
| Price | $17.99 — better | $35.00 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 68.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #139 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 484 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | APP4NAV | Avalon Navigation Systems |
Customer experience
Weather4D Lite
Avalon Offshore
In-app purchases
Weather4D Lite
- 3 Months HD Forecast Subscription$17.99
- 1 Year HD Forecast Subscription$39.99
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
Questions
Is Weather4D Lite free?
Is Avalon Offshore free?
Do Weather4D Lite or Avalon Offshore have ads?
Which is updated more often, Weather4D Lite or Avalon Offshore?
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