Light that actually matters
Golden hour, blue hour, and astronomical darkness are calculated from the real sun position at your exact coordinates — not a fixed offset from sunset.
iPhone · Photo & Video
Know when the light will be right.
Open Skies scores every hour from 0 to 100 for the kind of photography you actually do — factoring in cloud cover, wind, precipitation, visibility, humidity, sun angle, and the moon.
Coming soon to the App Store · Currently in TestFlight beta
Seven photography modes
Each mode weighs conditions differently — heavy overcast is a softbox for portraits but flat for landscapes, and dead-calm air is everything for macro.
- Landscape
- Portrait
- Street
- Wildlife
- Astrophotography
- Macro
- Fog & Mist
What's inside
A forecast built around light, not just temperature.
Built for astrophotography
Open Skies models the moon the way astrophotographers actually think about it: not just the phase, but the moon's altitude in the sky.
A bright moon overhead floods the whole sky; the same moon near the horizon barely dims the stars while gently lighting your foreground. A moon below the horizon means the darkest possible sky.
Find where to shoot
Best Conditions Nearby scans a 50-mile radius for the clearest skies in the next few hours. Locations maps photogenic spots within 10 miles — viewpoints, parks, lakes and coastline, landmarks, museums and public art — each scored for current conditions.
Severe-weather alerts
Active National Weather Service warnings for your location, so a sunrise plan doesn't run into a storm. Available in the United States.
Know your settings
Tap any hour for suggested aperture, shutter speed, ISO, and white balance tailored to the conditions and your selected photo type — plus contextual tips on wind, dew, the 500 rule, and more.
A built-in guide covers exposure, the histogram, and how to use aperture- and shutter-priority modes.
Reminders
Get a heads-up when top-tier conditions are coming for your saved locations. Reminders are scheduled on your device — there is no notification server.
No account. No ads. No tracking.
Your location is used only to fetch forecasts, and is never sold or shared. Just better photos.
Nothing to sign up for
No accounts, no email, no password. Open the app and it works.
Stays on your device
Saved locations, preferences, and reminders never leave your phone.
Open data
Forecasts come from Open-Meteo, OpenStreetMap, and the US National Weather Service.
Read the details
The full privacy policy spells out every request the app makes.