Suntime connects you to the cycles of the Sun, Moon, and planets. Navigate through time and identify celestial patterns with a swipe. Get accurate, location-specific information about solar and lunar events at-a-glance.

“Awesome” — “Visually understand the cycles in our planetary system” — “Feel connected to the universe”

- Zoom the timeline in or out to see astronomical movements at different scales
- Jot down notes and reminders directly on the timeline
- Watch the Sun, Moon, and planets rise and set
- Home screen widgets: upcoming events and planisphere
- Customize alerts for 25 solar and lunar events, including:
> Sunrise, solar noon, sunset, solar midnight
> Moonrise, lunar noon, moonset
> Moon phases: full moon, new moon, first quarter, and last quarter
> Twilights: civil, nautical, and astronomical dusk and dawn
> Morning and evening golden hour
> Solar and lunar eclipses
> Seasonal events: March equinox, June solstice, September equinox, and December solstice

“Beautiful and an absolute delight to use” — “Easy to follow interface and alarms” — “Pretty damn cool”

Suntime works in landscape and portrait mode on iPad. Use your current location, or select one manually. The app is lightweight and works offline: all astronomical calculations are done on your device. It uses Background App Refresh to schedule alarms.

“Wonderful visualization of Solar + Lunar cycles in a very intuitive format. Animations are superb”

There’s more to explore inside: including a glossary and tooltips with contextual information like the position, angle, illumination, and magnitude of the Moon, the visibility of eclipses, and the length of twilight.

We are ad-free and user-supported: Suntime doesn’t track you or profit from your information. Thanks to all our users who have given us feedback and continue to help make this app better!

-Andrew & Heather

What’s New

Version 1.5.3

- Added display option: Show solar and lunar altitude
- Added display option: Reverse East/West heading indicators

Ratings and Reviews

4.8 out of 5
85 Ratings

85 Ratings

shrikehunter ,

Really cool app

Got an invite for the beta, so I’ve been using the app for a couple of months now. The app has a really cool, intuitive visualization for sun and moon phase, which is a lot of fun to play around with. (Zoom all the way in and out, it’s pretty neat!) My favorite thing right about the app is the customizable chimes to alert when certain astronomical events occur. It’s actually really great to get an alarm when the moon is at its peak so I can take a break, go outside, and enjoy the view.

Developer Response ,

Thank you shrikehunter. Really appreciate the kind words, and we're so glad you like it!

dmc1999 ,

Beautiful Solar + Lunar display with alarms

This app is beautiful and an absolute delight to use. Wonderful visualization of Solar + Lunar cycles in a very intuitive format. Animations are superb. Scrolling through time and watching the motions of the inner solar system is a treat.

The cyclical Solar + Lunar alarms are a clever way to keep track of the larger world around us and the motions of the days. Especially useful for anyone that spends a lot of time indoors and/or in front of a screen.


Developer Response ,

Thank you so much for the kind words! We are blushing ✨

spikedlatte ,

Never been more excited about an app

If you are an astronomy geek or want to follow the diurnal cycles of the sun and moon for whatever reason, this is the app. The app itself is thoughtfully designed and feature full for what it promises to do. Plus the app cares about your privacy and keeps all the data on device.

App Privacy

The developer, Digital Sundries LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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