Some days are just perfect. PrimeWindow tells you when.
Tell PrimeWindow where you go and what conditions count as good. It tracks your spots and alerts you before a Prime Window opens.
- Pick your spots and activities.
- Set the conditions that feel good to you.
- Get alerts when a Prime Window is coming.
No more checking three weather apps ten times a day.
PrimeWindow alert
New Prime Window
Low winds at South Bay in 2 days.
Prime Window
06:40-08:10
South Bay
Built for people who plan life around conditions.
Early access opens soon.
The planning gap
Forecasts show data. You need a decision.
- Is it good enough?
- How long will it hold?
- How confident is it?
How it works
A calm way to plan ahead.
Pick your spots
Save the places you care about and keep them ready.
Choose what "good" means
Use presets, then tweak when you want more control.
Get alerted when a Prime Window opens
You get one clear signal when conditions line up.
Use cases
Made for real routines.
Fly
Wind and timing, simplified.
Surf
Spot checks that fit your day.
Ride
Know when conditions settle.
Climb
Plan around weather shifts.
Sail
See windows that are worth it.
Shoot
Light and weather at a glance.
Run
Choose steady hours.
Explore
Pick the right moment to go.
Confidence
Confidence you can see.
PrimeWindow compares trusted sources and highlights where they agree. You can see when signals line up, and when they spread out.
What affects confidence?
- Model agreement
- Gust risk
- Precipitation uncertainty
- Rapid change windows
Window alignment
High confidence
Lower confidence
Sharing
Share a window. Make a plan.
Send a Prime Window to friends in the app, or share a clean link that anyone can open.
Open example share linkSouth Bay
Sat, 06:40-08:10
Map
Early access
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