Moonphase Setter - Watch Sync

Contains adsIn-app purchases
Content rating
Everyone
100+
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Content rating
Everyone
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About this app

Complete the Universe on Your Wrist.

A moonphase watch is at its most beautiful when it shows the moon that's actually in the sky. Moonphase Setter tells you exactly how far to move it, and guides you through every turn or press.

■ How it works
1. Take a photo of your watch dial.
2. Line up the moon on the dial with the target moon, by hand or with AI analysis.
3. Follow the instruction: how many times to turn the crown, press the corrector or pusher, or turn the hands.

■ Step-by-step adjustment guide
• Supports crown, corrector, pusher and hand-rotation movements
• Crown that can turn backward? The shorter direction is suggested
• Tap a counter with each turn or press so you never lose count
• Re-take a photo afterwards to verify the result

■ Protects your movement
Between 9 PM and 3 AM many movements are changing the date or moonphase, and adjusting can strain the gears. The app warns you during this window, in your observation location's time zone.

■ My Watches
• Save each watch with its adjustment method and photo, and start your next sync in a tap
• Re-sync reminders: the app estimates how far each watch has drifted since its last sync, from its gear train, and lets you know when it's about a day off

■ AI watch identification
Not sure how your watch is adjusted? Identify it from your photo, then open its manual to check the moonphase setting.

■ Moon calendar
See a whole month of moons with each new moon, quarter and full moon, and jump to any date.

■ Accurate for where you are
The moon is calculated for your location and time zone. Use GPS or search for any place, with a southern-hemisphere view when you need it.

■ Premium
More daily AI analyses, unlimited watches and no ads. The adjustment guide, danger-time warnings, manual verification and re-sync reminders are always free.

Adjustment methods vary by model and movement; please check your watch manufacturer's manual for details.

Give your timepiece the gift of perfect synchronization.

Privacy Policy: https://moonphase.moreflow.app/privacy.html
Set your moonphase watch to the real moon with a step-by-step adjustment guide
Updated on
Oct 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Personal info and 5 others
  • Data is encrypted in transit

What’s new

• Moon Calendar dates now match the real moon more accurately.
• Easier moonphase alignment and other improvements.
Content rating
Everyone
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App support

About the developer
Wooram Yang
moreflow.dev@gmail.com
田端5丁目7−11 kotobukiiida 503 北区, 東京都 114-0014 Japan