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Macoui
Free routing with weather, wave and current models
Macoui helps sailors compare atmospheric, wave and current forecast models, calculate isochrone routes with their own boat polar, and use MBTiles charts offline. It runs on the web, iOS and Android, so passage planning can continue beyond cellular coverage. Tutorials: https://www.youtube.com/playlist?list=PLK4tCK8I2PjspR8nBb1yXlhjYKbxOoiwM
About Macoui on Product Hunt
“Free routing with weather, wave and current models”
Macoui was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #114 on the daily leaderboard. Macoui helps sailors compare atmospheric, wave and current forecast models, calculate isochrone routes with their own boat polar, and use MBTiles charts offline. It runs on the web, iOS and Android, so passage planning can continue beyond cellular coverage. Tutorials: https://www.youtube.com/playlist?list=PLK4tCK8I2PjspR8nBb1yXlhjYKbxOoiwM
On the analytics side, Macoui competes within Weather, Maps and Outdoors — topics that collectively have 23.8k followers on Product Hunt. The dashboard above tracks how Macoui performed against the three products that launched closest to it on the same day.
Who hunted Macoui?
Macoui was hunted by Sailing Macoui. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Macoui including community comment highlights and product details, visit the product overview.


Hi Product Hunt 👋
I’m Selim, one of the makers behind Macoui.
Before a passage, we kept ending up with weather files in one tool, boat polars in another, and charts somewhere else, then losing connectivity offshore.
So we built one place to:
- compare atmospheric models including GFS, ECMWF, ICON, AROME and ARPEGE
- compare wave and current forecast models along the route
- calculate isochrone routes with your own boat polar
- review wind, gusts, waves, currents, clouds and temperature over time
- import MBTiles charts and keep working offline after downloading GRIB files
- plan from the web, iOS or Android
Macoui is free. It is a passage-planning aid, not a replacement for official charts or sound seamanship.
The feedback we care about is practical... what would make your next passage easier to prepare?
I’ll be here to answer questions.
Want to explore Macoui in more detail?
We have also published a complete tutorial playlist covering weather models, routing and the main features of the app:
https://www.youtube.com/playlist...