Constellation Guide

Star Tracker & Planet Finder

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Explore 8,800+ stars, 88 constellations, and the ISS — all offline, in 12 languages. Explore the night sky with AI-powered guidance. Constellation Guide features 88 constellations, 8,835 stars, and intelligent chat to answer your astronomy questions — all offline. Perfect for: • Identifying stars and constellations in real-time • Learning astronomy with AI assistance • Planning stargazing sessions • Offline sky mapping anywhere • Space exploration and education Perfect for: • Identifying stars and constellations in real-time • Learning astronomy with AI assistance • Planning stargazing sessions • Offline sky mapping anywhere • Space exploration and education WHAT MAKES CONSTELLATION GUIDE DIFFERENT • AI Sky Guide Ask anything about astronomy and get instant, accurate answers. Your AI astronomer knows the cosmos inside out and can explain everything from black holes to meteor showers in plain language. • Deep Space Zoom Dive into nebulae, galaxies, and star clusters with unprecedented detail. Explore the Orion Nebula, Andromeda Galaxy, and more deep space wonders. • Astronomy Stories Discover the myths, science, and history behind every constellation. From ancient Greek legends to modern astrophysics, there's always something new to learn. • Beautiful Constellation Art See constellations come alive with hand-crafted artwork that brings ancient star patterns into the modern age. • Time Travel Rewind to see the sky on any historical date, or fast-forward to plan tomorrow's stargazing session. Watch planets dance across the heavens at any speed. • AR Camera Mode Overlay constellations directly onto your real-time camera view. Perfect for identifying stars when you're actually outside under the night sky. • Night Mode Preserve your night vision with a red-tinted display that won't ruin your eyes' adaptation to darkness. • Works Offline Take the entire cosmos with you anywhere. No internet required once downloaded. COMPLETE FEATURES • Real-time sky map that follows your device's movement • Thousands of stars with accurate positions and data • 88 constellations from cultures around the world • Planets, moons, and the International Space Station • Deep zoom into nebulae and galaxies • AI astronomer for instant answers to any space question • Hundreds of curated astronomy stories and facts • Time travel to any date, past or future • AR camera overlay for stargazing outdoors • Night mode to protect your vision • Search to find any celestial object instantly • Works completely offline • No ads, ever PERFECT FOR • Backyard stargazers who want to know what they're looking at • Parents teaching kids about space and science • Campers and hikers exploring dark sky locations • Amateur astronomers planning observations • Anyone curious about the universe above SUBSCRIPTION & PRICING Constellation Guide is free to download with a 3-day trial. After the trial: • Monthly: $6.99/month • Annual: $39.99/year (save 52%) Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage subscriptions in your App Store account settings. ABOUT THE DATA Our comprehensive star database features thousands of stars with positions accurate to modern astronomical standards. Constellation artwork and stories are carefully researched and beautifully presented. Deep space images come from professional astronomy sources. PRIVACY & SUPPORT We respect your privacy. Location is used only to show your local sky and is never shared. Privacy Policy: https://probabilityapps.com/privacy Terms of Service: https://probabilityapps.com/terms Support: support@probabilityapps.com Point your device at the stars. Discover the universe.

A Closer Look

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

Now in 12 languages! Arabic, Hindi, Japanese, Korean, Polish, Russian, and Turkish added. Fixed paywall display bug.

Version 1.1.1

The developer, PROBABILITY LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Larger Text

    • Dark Interface

    • Sufficient Contrast

For more information, visit the developer’s accessibility website .

Information

Seller
  • PROBABILITY LLC
Size
  • 108.8 MB
Category
  • Reference
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 11 more
  • English, Arabic, French, German, Hindi, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Turkish
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Probability LLC
  • Developer Website
  • Privacy Policy

    • More by PROBABILITY LLC