Sun to Moon Sleep Clock is a gentle sleep trainer that helps toddlers and young children learn when to stay in bed and when it’s okay to get up. Throughout the night, 26 stars disappear one by one, giving kids an easy visual countdown until morning. The app is quick to set up, fully customizable, and packed with optional sleep sounds, wake sounds, nap timers, and bedtime-routine tools.
Kids can personalize the friendly Sun and Moon characters with outfits and accessories from their shops. Everything is unlocked from the start, but you can enable the optional Snooze Rewards system to encourage healthy sleep habits. The longer your child stays in bed, the more Snooze Coins they earn — and they can trade them for fun gifts for Sun and Moon.
Wake-up times can be set from the settings screen or by tapping the orange time buttons on the main daytime screen. Tapping Goodnight triggers an instant sunset at bedtime. Need an early wake-up for a nap or a schedule change? Tap Moon’s nose three times for an out-of-schedule sunrise — and three more times for an immediate sunrise.
Full instructions: https://www.msibley.com/sleep-clock
Updates & tips: https://www.facebook.com/suntomoonsleepclock
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Key Features
• Gentle sleep training with a visual star countdown
• Soothing sleep sounds: Fan, white noise (hair dryer), waves, heartbeat, whale song, rain and more — or silence
• Fun wake-up sounds: Birds, digital alarm, drums, rooster, Happy Birthday, Santa/Jingle Bells and more — or silence
• Custom schedules: Optional 7-day routine planner
• Digital or analog clock styles, including a large-digit mode
• Speaking Clock: Tap Sun or Moon’s mouth to hear the time (optional)
• Customizable outfits and accessories for Sun and Moon
• Themes: Birthday, Christmas, Easter, Halloween, St Patrick’s Day, Pirates, Sports, Space
• Snooze Rewards system using collectible Snooze Coins (optional)
• Shooting-star progress bar for nighttime visualization
• Final Countdown Mode: Faster 12-star countdown before wake-up (optional)
• Reading Time: Moon reads for up to an hour at sunrise or sunset
• Nose Tap Naps: Set a nap duration and activate with 3 taps
• Immediate Sunrise: Trigger instantly with 3 extra taps
• Morning Memo: Write a message for your child — Sun can read it aloud (optional)
• Dim & Auto-Dim controls to reduce brightness
• Dark Mode for softer nighttime colors
• Built-in help screens throughout the app
• Multilingual support: English, German, Spanish, French, Italian, Dutch, Portuguese, Simplified Chinese, Japanese and Korean
• PIN-protected settings with Face ID / Touch ID support (master code: 8529)
• Dreamy illustrations by artist Michael Sibley
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Helpful Notes
• For uninterrupted use, enable Guided Access to disable device buttons
• Keep your device plugged in while the app is running overnight
• Reduce screen brightness or enable Auto-Dim for extended nighttime use
• If you forget your settings PIN, the master code is 8529
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If You Find the App Helpful…
A rating or review on the App Store really helps us improve Sun to Moon.
Thank you for your support — and sweet dreams!
We tried two different sleep training clocks until we found this app. It has many different functions—naps, alarms, reading time, bedtime music—but is still straightforward. The moon indicates sleep; the sun signifies wake up. My daughter loves customizing the screens so it’s “hers.” The backgrounds and accoutrements are quite lovely, artistically rendered rather than generic clip art.We use the app on the iPad, so it also serves as her nightlight, with dimmable options. Since we purchased the app, my daughter has slept in her bed through the night! I think it will also continue to provide good use as she gets older and school age, with the (customizable) gentle alarms and reading time functions (scheduled time before bedtime and/or after wake up).Finally, the developer is thoughtful and really open to feedback. I contacted him to ask about a user preference, and he responded immediately, then rolled out an update a week later.I highly recommend this app, one of the best app purchases!
Sun
ThisAppIsNotWorkingPleaseHelp
Mine must have a bug because I have to manually set the moon every night. I was hoping it would automatically turn when I set it for bedtime. I’ve deleted and reinstalled the app. Restarted it several times and still nothing.Changing my rating because Michael got in contact and promptly fixed the issue. Thanks again!! This app is now working perfectly and is such a great help!
Developer Response
Thanks for reaching out on this issue and for helping us find a fix 😊
Simple and straightforward
vale_gooo
I love this app, it really helped my kiddo when she started school, the music for bedtime is relaxing, it has countdown stars (that can be customized to other things) to know if it’s closer to wake up time. It’s so simple but it helped with her understanding that if the moon is there she can sleep some more. This was the best solution I found to teaching her the time at 5 yrs old.
Developer Response
I'm glad your 5 year-old is finding our app useful and thank you so much for taking the time to review 😊
Most valuable app on my kids ipads
Lady roman
I started using this app before my son could climb out of his crib. He quickly figured out that I wasn’t going to take him out until he saw the sun so once I transitioned him into a toddler bed he never got out of bed before the sun. I highly recommend this app to all parents of toddlers!
• Multilingual support for English, German, Spanish, French, Italian, Dutch, Portuguese, Simplified Chinese, Japanese and Korean
• Speaking clock now works with all available voices on your device
• New option to speak the morning memo automatically at wake-up time
• General improvements and bug fixes
Version 5.1
The developer, Michael Sibley, 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
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Michael Sibley
Size
54.2 MB
Category
Education
Compatibility
Requires iOS 13.0 or later.
iPhone Requires iOS 13.0 or later.
iPad Requires iPadOS 13.0 or later.
iPod touch Requires iOS 13.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
Languages
English
Age Rating
4+
4+
Made for Ages 0–5 This app has an age rating of 4+ with content restrictions. Some content may be rated higher, but access is managed by the developer through in-app controls.
