Plenilune
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Press & editorial kit · Version 2.0

The Moon as an engraving, recalculated every night from its real position. Version 2.0 opens up the sky around it: constellations, the full-screen Moon, a viewfinder that turns with your iPhone, and a layout made for iPhone Duo.

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  • Plenilune 2.0

    On the App Store, free update

  • iPhone Duo

    Folded and unfolded layouts from day one

  • Hunter’s Moon

    Full at 04:12 UTC

  • Beaver Moon

    Full at 14:53 UTC

  • Cold Moon

    The closest full moon of 2026

Key art

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Key art without text or device. Focal point centred, safe for 21:9 and 3:2 crops.

For an article

Images ready to lead a post

The app in its setting, with no text or logo baked into the image: your headline goes on top. 3200 × 1800 px, JPEG, light and dark, with screens in the language of this page.

  • Three iPhones: tonight's Moon, the constellations, the full-screen Moon

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    Three iPhones: tonight's Moon, the constellations, the full-screen Moon
  • One iPhone, on the engraved sky

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    One iPhone, on the engraved sky
  • iPhone Duo, open

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    iPhone Duo, open
  • iPhone Duo and iPhone, side by side

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    iPhone Duo and iPhone, side by side

The story

One Moon, recalculated every night

Plenilune is a lunar almanac for iPhone and iPad that computes the sky with its own astronomy engine. The Moon on screen is never a photograph and never one of twenty-eight stock phases. Each night it is traced as an engraving from the real geometry: the terminator, the libration, the tilt at your latitude.

Version 2.0 widens the frame from the Moon to the sky. Pull back and the constellations appear, with the ecliptic and the figure the Moon sits in tonight. Tap the Moon and it fills the screen as a globe you can turn. Lift your iPhone and the engraved sky follows it. Everything is still computed on the device, with no account and no ads.

What's new in 2.0

Twelve things to try

Every screen exists in light and dark, in six languages. Final files: 1320 × 2868 px, JPEG.

  • Moon and Sky
    Moon and Sky

    LightDark

    Moon and Sky

    Today opens on tonight's Moon. One switch pulls back to the sky around it.

    Free Moon and Sky

  • Constellations and the ecliptic
    Constellations and the ecliptic

    LightDark

    Constellations and the ecliptic

    Figures and names traced over the real sky, with the band the Moon travels along.

    Free

  • The full-screen Moon
    The full-screen Moon

    LightDark

    The full-screen Moon

    Tap the Moon to bring it full screen as an engraved globe, lit as it is tonight. Turn it with a finger to reach the far side, and read the names of its seas, craters and landing sites.

    Premium

  • The viewfinder
    The viewfinder

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    The viewfinder

    Hold up your iPhone and the sky turns with it. Touch mode works from the sofa.

    Premium

  • Day and hour dials
    Day and hour dials

    LightDark

    Day and hour dials

    A date pill and two dials to scrub through nights and watch the shadow move.

    Free 1900–2100

  • Month and year
    Month and year

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    Month and year

    The calendar opens as a sheet, set for your hemisphere.

    Free this month · Premium the rest

  • Share cards
    Share cards

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    Share cards

    Moon, sky, eclipse, rare day, moonrise. For Stories and posts.

    Free most cards

  • Inks
    Inks

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    Inks

    Five inks and a custom wheel tint the whole almanac, widgets included.

    Free sepia · Premium the rest

  • Notifications, one by one
    Notifications, one by one

    LightDark

    Notifications, one by one

    One switch per kind: phases, eclipses, seasons, the morning note and more.

    Free 3 kinds · Premium 7 more

  • Saved places
    Saved places

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    Saved places

    Star the places you watch from and switch between them.

    Premium

  • Alternate app icons
    Alternate app icons

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    Alternate app icons

    Moon phases, eclipses and the drawn emblems of the named moons.

    Free Crescent · Premium the rest

  • Bigger widgets
    Bigger widgets

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    Bigger widgets

    New sizes up to Extra Large Portrait on iOS 27, on the Home Screen and the Lock Screen.

    Free Moon, every size

iPhone Duo

Closed, one page. Open, split along the fold.

Folded, the almanac reads as one continuous page. Unfolded, the Moon sits on one side of the fold and the day on the other. The Extra Large Portrait widget fills the inner Home Screen.

  • Today: the Moon on one side of the fold, the Almanac on the other
    Today: the Moon on one side of the fold, the Almanac on the other

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    Today: the Moon on one side of the fold, the Almanac on the other
  • The month, right of the fold
    The month, right of the fold

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    The month, right of the fold
  • An Almanac card: the phase as a diagram
    An Almanac card: the phase as a diagram

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    An Almanac card: the phase as a diagram
  • Moon and Sky: the Moon among its constellations
    Moon and Sky: the Moon among its constellations

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    Moon and Sky: the Moon among its constellations
  • The full-screen Moon, far side
    The full-screen Moon, far side

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    The full-screen Moon, far side
  • The viewfinder, full screen
    The viewfinder, full screen

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    The viewfinder, full screen

For the App Store

Files at App Store sizes

Each file follows the current App Store Connect specifications. Layered sources are available on request.

  • Product page header

    Product page header

    Size
    21:9 · 3840 × 1646 px · JPEG or PNG, no transparency
    Content
    The key art cropped to 21:9, Moon centred
    Also
    16:9 · 5244 × 2950 px JPEG, universal version
  • Search results

    Search results

    Size
    3:2 · 1920 × 1280 to 3840 × 2560 px
    Content
    The Moon in the app itself: Today, sky mode

  • Promotional artwork

    Size
    4320 × 1080 px · layered PSD
    Layers
    Sky background · constellation lines · Moon · emblem · no text
    Status
    On request, built on Apple's template
  • Card
    Detail

    In-app event media

    Card
    16:9 · 3840 × 2160 px, or a 15–30 s loop
    Detail
    9:16 · 2160 × 3840 px, or a 15–30 s loop
    Rule
    No text, no logo; same style on card and detail
  • Light iconDark icon

    App icon

    Exports
    1024 px PNG · light and dark
  • iPhone
    iPhone

    Screenshots

    iPhone 6.9"
    1320 × 2868 px
    iPad 13"
    2064 × 2752 px
    iPhone Duo
    1398 × 2034 outer · 2007 × 2853 inner
    Sets
    Bare screens, light and dark · App Store plates with captions

Upcoming moments

Four in-app events through December

Card and detail media for each event, at full resolution and without text.

  • Major update

    Plenilune 2.0

    Oct 23 – Nov 22

    Plenilune 2.0 · Card

    LightDark

    Plenilune 2.0 · Detail

  • Special event

    Hunter’s Moon

    Oct 25 – 27

    Hunter’s Moon · Card

    LightDark

    Hunter’s Moon · Detail

  • Special event

    Beaver Moon

    Nov 23 – 25

    Beaver Moon · Card

    LightDark

    Beaver Moon · Detail

  • Special event

    Cold Moon

    Dec 23 – 25

    Cold Moon · Card

    LightDark

    Cold Moon · Detail

Free and Premium

What's free, what's Premium

Plenilune is free to download. Premium is a yearly subscription or a one-time lifetime purchase. Editors can request a code that opens everything.

FeatureFreePremium
Tonight's Moon, phase, rise and setYesYes
Sky mode and constellationsYesYes
The Moon up close and the viewfinderNoYes
Moving through time, 1900 to 2100YesYes
CalendarThis month and the year viewEvery month
Share cardsMoon, sky, eclipse, rare day, moonriseAll cards
NotificationsFull, new and quarter moonsSeven more kinds
Inks and iconsSepia ink, Crescent iconAll inks, custom ink, all icons
WidgetsMoon in every sizeCalendar in every size, the full note of the day
Saved placesNoYes

Built with

How it's made

Metal

Custom Metal shaders render the engraved globe and its hatching.

Core Motion

The viewfinder reads the gyroscope to point the sky where you hold your iPhone.

WidgetKit

Home Screen and Lock Screen widgets, up to Extra Large Portrait on iOS 27.

On-device astronomy

Phase, libration, rise and set and eclipses follow Jean Meeus's Astronomical Algorithms, tested against real full moons. No server.

Privacy

No account, no advertising, no advertising identifier. Anonymous usage measurement, hosted in the EU, can be switched off in the settings.

Six languages

English, French, German, Spanish, Italian and Portuguese, almanac notes included.

The maker

Rémy Boiré

Independent developer, based in France.

The twelve emblems of the named full moons are drawn by hand. The nightly Moon is computed, then rendered with hatching and paper grain, which is why tonight's never repeats.

Try it

A code that opens everything

One line is enough: I reply with an App Store code for full access, and with answers to any technical questions.

Request a promo code →contact@plenilune.app

For writers

Texts and files from the kit

Copy, ready to pasteThe button copies plain text.

One line

About thirty words, to add Plenilune to a roundup already online.

Plenilune (iOS, free with an optional subscription): a moon almanac where the moon isn't a photograph but an engraving recomputed every night from the ephemerides. Today's phase, rise and set, eclipses visible from where you are, and the twelve named full moons. All computed on device. plenilune.app

Sixty words or so

For a short item or an app-of-the-day slot.

Plenilune is an almanac of the sky for iPhone and iPad. Each night the Moon is an engraving redrawn from its real position: the shadow line, the libration, the tilt at your latitude. Each morning, a sourced almanac entry: something in the sky, an old saying, a piece of folklore. Plus rise and set times, the eclipses visible from where you are, and four widget families. No account, no ads, no network needed.

Two hundred words

For a review or a longer feature.

Plenilune is an independent moon almanac for iPhone and iPad that computes the sky itself instead of calling an online service. That engine follows Jean Meeus (Astronomical Algorithms, ch. 47–49) for phase, libration and position, and adds rise and set with the standard refraction correction, plus eclipse prediction, computed for the observer's position and flagged only when the eclipse will actually be visible there. A test suite checks it against a table of real full moons. Nothing depends on a server: everything is computed on the device. The difference shows on screen. Plenilune's moon is neither a NASA photograph nor one of twenty-eight images on rotation: it is an engraving, redrawn each night from the geometry of the moment. The hatching comes from the hand, the geometry from the sky. Each morning the app offers an almanac entry drawn from five registers: the sky, history, folklore, old sayings, nature. Always sourced, and never a prediction. Each of the twelve named full moons has its own page and its own drawn emblem. Plenilune is free; an optional subscription opens the rest of the almanac.

Four anglesFour ways in, depending on the readership.

Indie app

An astronomy engine written for the app rather than an API call. Offline, no account, no ads, four widget families, six languages, and an independent developer behind it.

Astronomy

The engine implements Meeus (Astronomical Algorithms, ch. 47–49) for phase, libration and position, rise and set with the standard refraction correction, and eclipse prediction for the observer's position. Unit tests check it against a table of real full moons. That is what made it publishable. The presentation is unusual; the numbers underneath are the point.

Design and illustration

Most lunar illustration is twenty-eight drawings on rotation. Here the plate is drawn from the data (the shadow line, the tilt, the slight wobble of libration), so this morning's has never existed before and won't return. The hatching, the paper grain and the ink are a graphic choice; the geometry is the sky's.

Rhythm, gardening, ritual

What the app refuses to do is the argument: no predictions, no horoscope, no promises. It tells you where the moon is tonight, when it rises, what the month's full moon was called, and what people used to read in the sky, given as what it is: folklore, with its source.

Good to knowHow the app is made, in a few lines.

The moon on screen

The disc is never a photograph. Each night the app draws it as an engraving from the ephemerides of the moment: the shadow line, the libration, the tilt at your latitude.

What is drawn by hand

The twelve emblems of the named full moons, the hatching and the paper grain. The daily disc itself is computed, which is why it never repeats.

An almanac, not a horoscope

The app predicts nothing and says nothing about anyone's future. Folklore appears as folklore, with its source.

Offline, almost entirely

Every astronomical figure is computed on the device, with no account and no advertising identifier. Two exchanges exist: a signed file of text corrections fetched at launch, and anonymous usage measurement hosted in the EU, which can be switched off in the settings.

The name

Plenilune, one word, no accent, one capital. From the Latin plenilunium, the full moon.

The twelve emblemsOne per named full moon, drawn by hand, in a light and a dark version. PNG, 768 px. Source files on request.
  • Wolf Moon
  • Snow Moon
  • Worm Moon
  • Pink Moon
  • Flower Moon
  • Strawberry Moon
  • Buck Moon
  • Sturgeon Moon
  • Harvest Moon
  • Hunter’s Moon
  • Beaver Moon
  • Cold Moon
The App Store listing, word for wordAs published today.

Lunar cycle tracker & widgets

Plenilune is a free moon phase app and lunar calendar, drawn like an engraving. Widgets, moonrise times, full moons, eclipses and the Moon's zodiac sign, all offline.

Plenilune is a moon phase app and lunar calendar that shows the Moon as it is tonight: its phase is computed from its real position, then drawn like an engraving. I built it end to end with one idea: bringing together, in a single app, the precision of astronomy and the beauty of engravings.

It answers the everyday questions: what is the moon phase today, when is the next full moon, what time does the Moon rise tonight. Moonrise and moonset times are computed offline for the place where you are, and so is the visibility of eclipses. And every morning, a moon story: a saying, a belief, a fact of astronomy.

You can also see the Moon among the stars. Switch to Sky and it steps back among the constellations, with the zodiac sign it is crossing. Tap it and turn it with your finger to reach its far side, with the Earth and the Sun behind it. At night, hold your phone up: the viewfinder lines the drawing up with the real sky and leads you to the Moon.

Day to day, Plenilune lives on the Home Screen and the Lock Screen through its moon phase widgets, up to the extra large size. It can alert you when a full moon, a new moon or a quarter approaches. Any page can be shared as an image or a short clip, with the Moon drawn as it really is that night.

Premium opens the full-screen Moon, the viewfinder and the calendar of every month from 1900 to 2100. It reveals the names and stories of the twelve traditional full moons, alerts you to rarer events such as eclipses, supermoons or the Moon changing sign, and adds inks for the app and its widgets, including one you mix yourself. This is how Plenilune can live without advertising.

FREE, NO ADS, NO ACCOUNT • Today's moon phase: name, age, illumination • Moon phase widgets for Home Screen and Lock Screen, in every size up to extra large • Lunar calendar of the month, opening over Today • Moonrise and moonset times, where you are • Next full moon, new moon and quarters: dates and notifications • Eclipses visible from where you are • Almanac page: Moon, Sun and Sky, each line explained • Sky mode: constellations, ecliptic and the Moon's zodiac sign • Any day from 1900 to 2100: its Moon and its sky • Share a day, the sky or an eclipse as a Story, a Post or a short clip • Made for iPhone Duo, folded or open • Everything is computed on your iPhone: works offline

WITH PREMIUM • The full-screen Moon, far side included • The viewfinder, lined up with the real sky • The calendar of every month, from 1900 to 2100 • Inks for the app and its widgets, including your own • More widget designs • The complete moon story every morning • Stories and engraved emblems of the twelve full moons • Notifications for eclipses, supermoons, changes of sign and more • Saved places • Twenty-one engraved app icons

Plenilune Premium is offered as an auto-renewing annual subscription, or a one-time lifetime purchase. Payment is charged to your Apple Account at confirmation. The subscription renews automatically unless turned off at least 24 hours before the end of the current period; it is managed and canceled in your Apple Account settings.

Privacy Policy: https://www.plenilune.app/en/privacy — Terms of Use: https://www.plenilune.app/en/terms

At a glance

Name
Plenilune — Moon Calendar
Developer
Rémy Boiré, independent developer, France.
Platform
iPhone and iPad, iOS 17 or later
Languages
English, French, German, Spanish, Italian, Portuguese
Price
Free. Optional Premium: €9.99 a year or €24.99 for life, on the App Store tier for each country.
Released
23 July 2026
Version 2.0
22 October 2026
Data
No account, no advertising, no advertising identifier. Every astronomical figure is computed on the device.
App Store
apps.apple.com/app/id6786650025

Apple, iPhone, iPad and App Store are trademarks of Apple Inc.