About
Tonight, look up. Lookup computes tonight's sky from your location and today's date, showing which constellations, planets and the Moon are up — fresh every night.
SKY SCORE FOR TONIGHT
Blends the Moon's phase and altitude, the length of full darkness and cloud cover into a 0-100 score for how good stargazing is tonight — plus the darkest "prime window."
LIVE SKY MAP
The sky right above you, right now. Stars, constellations, planets and the Moon in a fisheye projection — slide time to watch the sky turn.
POINT AT THE SKY (CAMERA + COMPASS)
Aim your phone at the sky and the names of constellations and planets in that direction overlay the real sky. Instantly answer "what's that bright star?"
OBSERVATION LOG & STAMPS
Tap a constellation, planet or meteor shower you've seen to log it — they collect like stamps. See how much sky you've met this month.
WORKS OFFLINE
Sun, Moon and planet positions are computed on-device, so it works without a connection. Only cloud data uses free weather data.
[ SUBSCRIPTION ]
Lookup+ unlocks the upcoming sky-events calendar (meteor peaks, conjunctions, moon phases), the Sky Time Machine (replay any date's sky), prime-time observing alerts, unlimited saved locations, and high-res share cards.
- Lookup+ Monthly: $2.99/month (auto-renewing)
- Lookup+ Yearly: $19.99/year (7-day free trial, then auto-renewing)
- Lookup+ Lifetime: $34.99 (one-time, no renewal, great as a gift)
Payment is charged to your Apple ID at confirmation. Subscriptions auto-renew unless canceled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://tartan-tango-270.notion.site/Lookup-Privacy-Policy-3935fe84a92f81dcb092d298f09d5d44
Note: Lookup is an astronomy observing and education tool that computes the real positions of celestial objects. It does not provide astrology or fortune-telling. The Sky Score is a guide; the real sky varies with air, light pollution and terrain.
Version history
Every release since 1.0.
- Lookup now really speaks English.
- The translations were always there — they just never reached the screen. The app now follows your device language, and you can pick a language yourself in Settings.
- The Lifetime pass also showed its Korean name on English devices. Fixed.
- Fixed a bug where saving a far-away observing location could show a high sky score on an empty report. Tonight's sky is now computed correctly for the location's longitude, and shows an honest 'No data' state when there's nothing observable.
- The Tonight's Sky Card now shows the constellations rising that night — with the constellation lines, planets, and the Moon in its real position.
First release.
What it stores
A summary of this app's privacy policy — nothing here is a new claim.
Documents
What this app stores is written in its privacy policy.
These are mirrors kept on this site. The versions registered with the App Store live in the legal hub on GitHub.
Something wrong with it?
Write to [email protected] and the person who wrote Lookup will read it.