Sundle: Golden Hour Planner

Sun, moon & Milky Way times

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

Know before golden hour begins. Which way the sun will set, where shadows will fall, when the Milky Way rises — all calculated right here, with no internet. Sundle shows when and where the light will fall, right where you are. Plenty of apps tell you what time the sun sets. Sundle also tells you which direction the light comes from, where shadows will lie, and where the moon and the Milky Way will sit in tonight's sky. Today's light See where the sun is right now. The countdown to the next golden hour runs large, with the sun's direction and shadow length resting quietly underneath. Numbers on their own don't help much. Instead of "altitude 69.4°", Sundle says "shadows are shortest, 0.4x your height" — an angle means little to a photographer, but a shadow length means something. Light map The sun's direction and the shadow direction are drawn on the map. Slide through the day to see where the light will come from at three in the afternoon, so you can tell before you leave whether a building blocks it or you'll be shooting into the sun. In AR mode, point your phone at the sky and today's solar path is drawn over the camera view. Calendar Move through dates to preview golden hour and blue hour. Moon phase, moonrise and moonset, and the window when the galactic center is visible are all there — along with whether moonlight will wash it out. 64 spots Photography spots across Korea, each with its region, tags, and a short note. How open the horizon is in each direction is calculated from terrain elevation, so a sunrise trip doesn't end up behind a mountain. You can save your own spots by tapping the map. Reminders Sundle lets you know before golden hour and blue hour begin — anywhere from 10 to 90 minutes ahead. It's fine if you can't make it. Tomorrow brings another. Widgets and Apple Watch See the time to the next golden hour from your Home Screen and Lock Screen. As it gets close, a live countdown appears on the Lock Screen. The Apple Watch app works on its own, without your iPhone. Everything is calculated on your wrist. Accurate Sun calculations use the NOAA algorithm. Twenty-two verification tests check the results against published Korea Meteorological Administration values, such as the Seoul summer solstice sunrise at 05:11 and sunset at 19:57. No internet needed Every astronomical calculation runs on your device. It works the same in airplane mode or deep in the mountains. There is no account, no server, and your location is never stored or collected. (Apple Maps is used for one thing only: showing the name of where you are, at the top of the screen. With no connection it simply says "Current location" and every calculation still works.) There are no ads. Sundle Pro One payment, once. Not a subscription. AR sky overlay · unlimited date previews · unlimited saved spots Astronomical calculations, golden hour, sunrise and sunset, the moon, the Milky Way, and the widgets stay free. A few notes The weather-based light score is still in progress and currently shows sample values. The app labels it that way on screen. AR mode works on physical devices only. The built-in spots are in Korea. Sun, moon, and Milky Way calculations work anywhere in the world.

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A short hello the first time you open the app. · Before asking for your location, it explains what the app calculates and what it does not — no weather forecast, no shooting score. · Settings now has a Rate Sundle link. · The rating prompt moved. It no longer interrupts you during golden hour; it waits until you come back to the app afterwards. Fixed · On Korean devices the location permission text appeared in English. It had been that way since the first release.

The developer, Woosoo Kim, 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

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    Woosoo Kim
    Size
    3.7 MB
    Category
    Photo & Video
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    • Apple Watch
      Requires watchOS 10.0 or later.
    Languages
    English and Korean
    Age Rating
    4+
    Copyright
    © 2026 Woosoo Kim