Stelo
A private night sky that fills itself, one star a day. You connect the dots.
Stelo (Esperanto for "star") is a slow, ambient stargazing companion. Every night, one to three new stars quietly fall into your personal night sky. Connect them with your finger to draw your own constellations, give them names, and watch a gallery slowly fill over weeks and months. There is no score. No timer. Nothing to lose.
Requires iOS 17 or later. iPhone only at launch.
How it works
- Open the app. New stars from last night pulse gently to greet you.
- Touch a star to begin a constellation. Drag your finger between stars to draw lines.
- Tap save. Name the constellation, or leave it untitled. It joins your gallery.
- Tomorrow, more stars will be waiting.
What's inside
- Daily falling stars. 1–3 per night, more on rare nights.
- Free-form constellation drawing. Any shape, any number of stars, any name.
- Quiet gallery. Every constellation you've drawn, with the date and a mini-render.
- 88-constellation Almanac. If your shape happens to match Lyra, Orion, or any other IAU constellation, a small banner appears. The Almanac fills in mythology and historical notes as you discover them — no quiz, no pressure.
- Special-night stars. 24절기 (Korean solar terms), full moons, meteor-shower nights, and your birthday all bring labeled stars with warmer colors.
- Home-screen widgets. Small and medium sizes show your latest constellation glowing through the day.
- Dark mode only. The whole app is one continuous night sky.
- English, 한국어, 日本語. Time zones and 24절기 calendar honored locally.
What we don't do
- No ads. Ever.
- No in-app purchases in v1.
- No accounts. No sign-up.
- No analytics. No tracking. No SDKs that phone home.
- No leaderboards. No friends. No sharing pressure.
- No push notifications nagging you to come back.
Privacy first
Stelo has no servers and no accounts. All your stars and constellations live on your device only. We literally cannot see them. The app contacts no servers at all in v1 — not for analytics, not for sync, not for anything. Stelo doesn't even ask for notification permission.