Plan your next trip with major and minor windows for any spot on Earth, even with no signal. Every date is free. No ads, no subscription, just one optional purchase.
Moonhour shows solunar major and minor windows for any place on Earth, right on your phone. It needs no cell signal, shows no ads and has no subscription.
Pick your day before you head out, then check the windows again at the lake, in the stand or on the ice, even where there's no coverage.
WORKS OFFLINE, ANYWHERE
Moonhour does every calculation on your device with classic astronomy formulas. It doesn't use a server or need an account. For any coordinates and any date, you get:
• Major windows around moon overhead and moon underfoot (±1 hour by default)
• Minor windows around moonrise and moonset (±30 minutes by default)
• Moon phase, illumination and age
• Sunrise and sunset
Times are shown in the time zone of your spot, not your phone's, with daylight saving handled correctly. A window that crosses midnight appears on both days. In the far north and south, Moonhour tells you plainly when there's no moonrise, two moonrises, midnight sun or polar night. It never makes up a window.
A DAY RATING THAT SHOWS ITS MATH
Each day gets a rating from a simple formula, and the full formula is published in the app. The day screen shows every factor and how many points it adds:
• How close the day is to a new or full moon
• Whether a major or minor window lines up with sunrise or sunset
• How many windows fall in the day
Ratings say "above average" or "below average" by solunar theory. You'll never see "bad day" or "no chance." The app also reminds you that solunar theory is a theory, not a catch forecast.
DAY VIEW WITH A 24-HOUR TIMELINE
See major and minor windows, daylight, twilight, the current time and the moon phase on one timeline. The moon icon matches what you'll see from your latitude, so it's mirrored in the Southern Hemisphere. Times use your device's 12- or 24-hour setting. You can swipe or jump to any date for free.
MONTHLY CALENDAR
See a whole month of day ratings and moon phases for your spot. Past and future months are all free, with no paywall on dates ahead. Tap a day to open its full timeline. The calendar follows your device's settings for calendar type, first day of the week and date format.
YOUR SPOTS, SAVED OFFLINE
Add a spot in any of four ways:
• Use your current location
• Search by name (needs a connection)
• Drop a pin on the map (needs a connection for map tiles)
• Enter coordinates in decimal degrees or degrees-minutes-seconds
Each saved spot keeps its time zone, even when you add it offline, and you can change the time zone yourself. Saved spots and all their calculations stay on your device and open without a signal. Distances are shown in miles or kilometers to match your device settings.
FREE TO USE
• Your current location plus 2 saved spots
• All dates, all months, the day rating and full timelines
• No ads, no account, no purchase prompt when you open the app
MOONHOUR UNLIMITED (ONE-TIME PURCHASE)
This is a one-time purchase, not a subscription. It unlocks:
• Unlimited saved spots
• Window alerts: notifications a set number of minutes before major and/or minor windows, for the spots you choose. Alerts show times in your spot's time zone and label the zone when it differs from your phone's.
The price appears in your local currency before you pay. Family Sharing is included, and Restore Purchases is always available. Your purchase is stored on your device, so it still works offline. There are no free trials that turn into charges. You'll only see the purchase screen if you try to add a third spot or turn on alerts. If you get a refund for the purchase, Moonhour keeps the spots you've already saved.
Know your windows before you go, and keep them with you once you're out of range.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Artem Frolov, 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 indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Sufficient Contrast
Reduced Motion
Information
Seller
Artem Frolov
Size
6.7 MB
Category
Sports
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.