reChain Grib

Jean-Charles LEVENNE

In-app purchases

About this app

reChain Grib is the simplest way to request, decode, and view GRIB weather files when you’re offshore with a Garmin inReach device.
Built for skippers who need reliable, lightweight, fully offline weather tools, it keeps you informed even far beyond any network.

→ Generate GRIB Requests
Create precise GRIB requests (wind, pressure, waves…) with a clean, intuitive interface.
Copy the request and send it via your inReach to a dedicated email—no internet required.

→ Decode GRIB Chunks
Paste the GRIB message chunks received by your inReach.
reChain Grib automatically decodes them into a downloadable GRIB file.

→ View GRIB Forecasts (Built‑in Viewer)
Open the GRIB directly inside the app and explore the forecast timeline with a clean, lightweight viewer designed for offshore use.

→ Built for Offshore Use
• 100% offline
• Extremely lightweight

→ Why reChain Grib?
Because offshore weather access should be simple, reliable, and available anywhere.
Whether you’re crossing an ocean or sailing along a remote coast, reChain Grib gives you the essential tools to request and view weather whenever you need it.

→ Notes
Requires a Garmin inReach device for sending/receiving messages.
reChain Grib is not affiliated with Garmin.
Terms of Use: https://www.jcskipper.com/rechain/rechain_terms.html

What’s new

Added Pressure and Waves parameters