When is it good
to go outside?
Sun AI scores every hour of your day for walking, running, cycling or time out with the kids — using UV, air quality, rain and how hot it really feels. You get one clear window, not a wall of numbers.
Free tells you the weather.
Premium tells you when to go.
Everything you need to read today is free. Premium adds the hourly outdoor score, activity profiles and the reminders that get you out the door at the right time.
Start free. Upgrade when you want the hours.
Every paid plan starts with three days free. Cancel any time before it ends and you are not charged.
Free
Read your day at a glance.
- Current weather, UV and air quality
- Hourly forecast
- Daily brief
- 3 saved locations
- 5 AI questions a day
Monthly
Everything, for everyday use.
billed monthly
- Everything in Free
- Best time to go outside — hourly score
- Walk, run, cycling and kids profiles
- Hourly PM2.5, PM10, ozone and NO₂
- Window reminders before conditions turn
- 50 AI questions a day
Yearly
Best price per month.
$6.67 a month · save 44%
- Everything in Monthly
- Five months free vs monthly
- Priority support
- Early access to new features
Prices in USD. Subscriptions renew automatically and can be cancelled in your App Store settings.
3 days free
Full Premium access. Nothing is charged until the trial ends.
Cancel anytime
Two taps in your App Store settings. No emails, no calls.
Your data stays yours
Export or delete it whenever you want, straight from the app.
Find your hour today.
Download Sun AI and see the best time to be outside — free, in about ten seconds.
Free to download · 3 days of Premium free · cancel anytime