App Icon
Sundial
Sun & Moon Times and Alerts
App Store
App Store
Apple Watch, iPhone, and iPad Supported
Apple Watch, iPhone, and iPad Supported
Apple Watch, iPhone, and iPad Supported
14 fun home screen widgets Apple Watch App with 100s of Complications Create alerts for 24 solar & lunar events such as sunrise, sunset, dawn, dusk, and moonset
Sundial Overview Video
Sundial Overview Video
App Store

Sundial 101

Sundial provides a one-of-a-kind display of the sun and moon rise/set cycle over the 24 hour day. As the seasons change, the yellow “sun is out” arc informs you of the precious daylight hours: shrinking during winter months and expanding as summer approaches. The white inner arc represents when the moon is visible in the sky. Civil, nautical, and astronomical twilights are shown on the solar dial in shades of blue.

Home Screen Widgets

Sundial on your home screen! There are 14 unique widgets, most of which are configurable.
Widget Screenshot
Widget Screenshot
Widget Screenshot

Apple Watch App & Complications

The Sundial Watch app gives you access to all of Sundial's solar and lunar data to go, calculated on your wrist without use of cellular Data or your iPhone.
Watch Screenshot
Watch Screenshot
Watch Screenshot
Watch Screenshot
Customize what solar and lunar data to display with Sundial Watch's swipable and configurable widgets. 3 widgets are loaded to start. Add more by swiping up. Move and rearange to customize Sundial Watch to suit your needs.
Watch Complications
Watch Complications
Watch Complications
Watch Complications
There are hundreds of different complication options, including Sundial's unique time rise/set dials.
Watch Complications
Watch Complications
Watch Complications
Watch Complications
For example, on the Infograph watch faces you can add sunrise/sunset time or countdown, civil dawn/dusk time or countdown, nautical dawn/dusk time or countdown, astronomical dawn/dusk time or countdown, moonrise/set time or countdown, moon phase, lunar illumination, and sun or moon altitude and azimuth. Geek out solar and lunar data lovers!!
Watch Complications
Watch Complications
Watch Complications
Watch Complications
A fan of Infograph corner complications? Sundial has you covered, with ridiculous flexibility. A small sampling of options:
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Sundial's Infograph Bezel complication supports configuration of both what to report on — sunrise/solar noon/sunset, civil dawn/dusk, moonrise/moonset, etc. — as well as the inner circular complication. Modular complications show recent and upcoming solar or lunar rise/peak/set.
Watch Complications
Watch Complications
Watch Complications
Watch Complications
Watch Complications
watchOS 7 required. Supported on Apple Watch Series 3, Apple Watch Series 4, Apple Watch Series 5, Apple Watch SE, and Apple Watch Series 6.

Alerts: From the Every Day to Life Critical

Create iOS notifications for 24 solar and lunar events:
Notification screenshot
Sundial users have found uses for alerts I could never imagine. Here are some of my favorite:

Travel to Any Time & Location

You can travel to any date and custom location with Premium in-app purchase, making Sundial an handy tool when planning a vacation or outdoor activity. And time travel is just plain fun: swipe around the dials to move forward and backward, or long press on the left or right side of the screen to experience the changing seasons at warp speed.

Pricing & In-App Purchases

Free The core iPhone and iPad app is free to use. Display the the solar and lunar cycle in Sundial's unique 24-hour ring. Times for today's sunrise, lunar noon, sunset, moonrise, lunar noon, and moonset are calculated on your device. Time travel to review times for up to ±7 days.
   
Sundial Plus A one time purchase of Sundial Plus unlocks on the iPad and iPhone app:
  • Unlimited alerts for any of 24 solar and lunar events, including sunrise, solar noon, sunset, dawn, dusk, moonrise, moonset, full moon, and new moon.
  • Unlimited time travel
  • Jump to another location anywhere on the earth
  • Show sun/moon altitude & azimuth, daylight/nighttime percentage, and moon phase name
  • Customize the dial
  • And many other geeky features ...
Trial free for 3 days.
   
Sundial Widgets A one time purchase of Sundial Widgets unlocks 14 home screen widgets on iPhone and iPad. Trial free for 3 days.
   
Sundial Watch A one time purchase unlocks the Sundial Watch app and hundreds of complications. Trial free for 3 days.
Each of Sundial Plus, Sundial Widgets, and Sundial Watch is a separate in-app purchase: pick what you need. If you want to go all in, a discounted bundle of all three is available via in-app purchase.

Use of Location Services

Sundial requests your location while using the app to calculate solar and lunar times based on your location. If you enable an alert (notification), it will further request your location "Always" (in the background). This is requested to ensure any solar or lunar alerts that are scheduled use an accurate location if you travel several miles or kilometers from where you last launched the app. For example, if you travel to a new city, Sundial will be notified of your location change in the background and will reschedule alerts based on your new location. Watch complications will also be more up-to-date in this mode.
Sundial uses a location mode that uses very little power: it only requests to be notified when a significant location change occurs (via geofencing). For example, you travel a few miles/kilometers. If you go to the Battery settings on your iPhone or iPad, Sundial may not even show up in the list unless you use the time display and keep it open often. Getting occasional location updates and scheduling any enabled alerts just won't use much if any battery life.
Sundial does not track your location or upload it to a server of any kind. See the App privacy policy.

About the Developer & Contact Information

Howdy! I'm Mike Muegel, the author of Sundial. I'm an software engineer living in Austin, Texas. Please don't hesitate to contact me if you would like more information about Sundial.
Press? Checkout the Sundial press kit and screenshots.