PrimeHour

PrimeHour is the trip planner built for photographers.

Add your destinations and dates, and PrimeHour turns every trip into a shot-by-shot plan — scoring each location by sun, moon, and weather, then scheduling your shoots around the best light.

PLAN THE WHOLE TRIP
• Multi-stop itineraries on a map — every destination, every day
• A shot list for each location, with the timing and gear it needs
• AI-generated photography spots near every stop, scored for the light

SCORE THE LIGHT
Every shot gets a 0–100 light score combining sun angle, cloud cover, and the forecast — plus a plain-language reason for the number. The engine reads conditions through the lens of your shot: a breeze that ruins a macro shot won't dent a cityscape, and the same high cloud that kills an astro night is what makes a sunset. Opinionated and transparent, never a black box.

SEE FURTHER AHEAD
Ensemble weather models and climate history score shots well past the 10-day forecast, so you can plan a trip months out — and the app tells you honestly how much to trust each number.

SHOOT THE NIGHT SKY
• True astronomical darkness, not just "after sunset"
• Moon impact judged by height and phase, so a low moon doesn't sink a good night
• The Milky Way core's real position, tracked properly
• Light pollution for any location on Earth — know before you drive
• Dew risk, because the clearest, stillest nights are the ones that fog a lens

NAIL GOLDEN & BLUE HOUR
• Live sun & moon compass — point your phone to see exactly where the sun and moon will rise, set, and sit
• An automatic daily schedule with "set up by" times so you're in position before the light peaks
• Best-window finding across your whole trip

DIAL IN EVERY SHOT
• AI gear & camera settings — the right lens from your own kit, plus exact aperture, shutter, and ISO for the conditions
• A packing list built from your trip's shots and the gear you own

BUILT FOR THE FIELD
• Offline-first — sun, moon, schedules, scores, and light pollution all compute on-device, so every screen works on a plane, in a canyon, or on bad hotel wifi
• Weather-change alerts when conditions for an upcoming shot shift

START FREE
Plan unlimited trips with up to five shots each, score every shot from sun, moon, and weather, and use the live sun & moon compass, nearby spots, the 10-day forecast, the daily schedule, and best-window finding — all free.

GO PRO WHEN YOU TRAVEL
PrimeHour Pro adds unlimited shots per trip, AI gear & camera settings, unlimited AI-generated photo spots, calendar sync and shoot reminders, and your photo logbook — $4.99/month or $39.99/year, with a 7-day free trial on the annual plan.

Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple ID. Manage or cancel anytime in your App Store account settings. The 7-day free trial applies to the annual plan; unused portion is forfeited on purchase.

Privacy policy: https://primehourapp.com/privacy
Terms of Service: https://primehourapp.com/tos