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Plenilune — Moon Calendar
Lifestyle

Plenilune — Moon Calendar

Plenilune turns local Moon data into an offline illustrated calendar on iOS

Visit plenilune.app

About Plenilune

Plenilune is an illustrated lunar almanac for iPhone and iPad. The phase of the Moon is computed from its real position, then rendered as an engraving. Moonrise and moonset times, and the visibility of eclipses, are calculated for the place where you are.

The almanac has three sections: Moon, Sun and Sky. The day's course is drawn as a curve, with dawn, astronomical night, the next perigee and the next two eclipses. A monthly calendar gives one card per day, and widgets put the current phase on the Home Screen and the Lock Screen.

Every morning Plenilune tells one moon story: a saying, a belief, a fact of astronomy. The twelve traditional full moons have their own names, stories and engraved emblems.

What it deliberately does not do: no horoscope, no predictions, no account, no ads, no tracking, and no network call to read the sky. Everything is computed on the device and works offline.

I'm an illustrator. I drew the engravings and built the app on my own. Premium is a yearly subscription or a one-time lifetime purchase, and that is how the app lives without advertising.

What Plenilune does that nothing else does

Other moon apps show the same NASA photograph. Here the Moon is computed from its real position and then drawn, as in an old almanac, with the folklore that goes with it.

Who Plenilune is for

People who look up at the sky and want to know what they are seeing, without an app selling them predictions about their week.


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Created by

Plenilune
@plenilune
Sep 24, 2026

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