Support

Most answers are below. If you are still stuck, email[email protected]and we will help.

How do I add the widget?

Touch and hold your Home Screen, tap the plus button, and search for Gibbous. Lock Screen widgets are added from the Lock Screen customizer the same way. One widget style is free; the full pack is Premium.

Is there an Apple Watch app?

Yes, and it is free: the moon on your wrist, with complications for your watch face. It installs with the iPhone app.

Does it run on iPad?

Yes. The same app, with the same widgets, on iPad in any orientation, and it syncs its settings, places and journal through your own iCloud.

Which alerts can I set?

The full moon alert is free, with a lead time you choose. Premium adds new moon, first and last quarter, eclipses, supermoons, rare moons and the peak night of each major meteor shower, a quiet digest of the weeks ahead, an alert half an hour before an evening moonrise, and an alert each time the moon returns to the phase you were born under.

How do I put a full moon in my calendar?

Open any full moon, new moon, eclipse, perigee or meteor shower in the Sky tab and tap Add to Calendar. The system calendar editor opens with the event filled in, so you pick the calendar and the reminder and save. Gibbous never asks for access to your calendar.

Are the moon days exact?

Each date comes from that tradition's own calendar: the Chinese lunisolar calendar, the Umm al-Qura calendar, the Hebrew calendar, and the church's reckoning for Easter, all computed on your device. Where a month begins with a sighting of the crescent, as in the Islamic calendar, the observed date can differ from the calendar by a day, and the app says so.

How does the camera finder work?

It is Premium. On the compass screen, tap Find it with the camera. The live camera fills the screen and a marker shows where the moon is, on the moon when you are pointing at it and at the edge with an arrow when you are not. Nothing is recorded; the preview is only ever drawn on screen. It needs an iPhone with motion sensors and a location.

Where do I set my birthday?

Gibbous offers it on first run, and you can add or change it any time in Settings under Your moon. The app then shows the moon of that night on the Today screen, and Premium adds the alert when it returns and the birth moon widget. Your birthday stays on your device and your own iCloud, and Remove birthday deletes it.

Can I ask Siri about the moon?

Yes. Ask Siri for tonight's moon, the moon on any date, or the next full moon. It works offline and needs no setup.

Why does the moon phase look flipped?

The lit side is mirrored between hemispheres. In Settings, turn on the Southern Hemisphere view to flip the moon to match your sky.

Moonrise and moonset are blank.

Rise and set times need a location. Allow location access, or add a place in Settings, and they will appear.

How accurate are the times?

Phase and illumination are computed from established algorithms and validated against published ephemerides. Moonrise and moonset are accurate to about a minute for your location.

Do alerts work offline?

Yes. Alerts are scheduled on your device from the moon's own cycle, so they do not need a signal or a server.

How do I restore a purchase?

In Settings, tap Restore purchases. Your Premium or Lifetime will return on any device signed in to the same Apple Account.

Is my data private?

Yes. There is no account, and Gibbous collects no personal data. See the Privacy Policy for the details.

Can I back up or delete my data?

Yes, both, from Settings then Your Data. Export a backup writes your saved places, journal notes, and settings to a single JSON file you keep and can read without Gibbous. Restore reads one back in. Delete all my data erases everything from the device and, if you use iCloud sync, from your iCloud too.