Constellation flashcards for iPhone

All 88 officially recognized constellations, each drawn as its actual star field with the figure lines connecting them. Study the pattern first; flip to reveal the name.

Download the deck

88 cards · 4.3 MB · free · updated July 12, 2026

88 cardsImages on the cardsSpeaks card text aloudFree

What’s inside

Each card's front is a chart generated from the HYG star catalog: real positions, real relative brightness, the standard figure lines, on a dark sky. There are no labels or coordinates; it's the same information your eye gets from the actual night sky, minus the clouds. The 88 range from the unmistakable (Orion, Crux, Ursa Major) to the obscure southern fills (Antlia, the air pump; Norma, the carpenter's square), and spaced repetition moves the famous ones out of your way within days.

This is the heaviest deck in the library at about 4 MB, all of it image data. It imports like any other.

Sample cards

Every front is a star chart rendered from real star positions; the back is the constellation's name.

Front	Back
Star field with figure lines (image)	Orion
Star field with figure lines (image)	Cassiopeia

Who it’s for

Stargazers who can find three constellations and want the other 85. It pairs well with a planetarium app: Flickdeck teaches you the patterns, and the sky teaches you where they sit.

Getting it onto your iPhone

Tap the download button on this page in Safari, open the download (the ↓ button by the address bar), and tap the file; it imports into Flickdeck as a new deck with every card unstudied. From a Mac or PC, download it and AirDrop it to your iPhone. The deck library page has the full walkthrough, and the app itself is coming to the App Store.

Source and accuracy

Star positions and magnitudes come from the HYG Database v4.1 (CC BY-SA 4.0, Astronexus); names and figure lines from d3-celestial (BSD 3-Clause). The card artwork is distributed under CC BY-SA 4.0, and the attribution notice has the full licensing detail.