Lagoon - Astronomy Companion

Your Night Sky Companion

Only for iPhone

Free · In‑App Purchases

iPhone

Plan your nights under the stars. Lagoon tells you what's visible tonight, tracks your observations, and helps you find the best spots to observe. Lagoon is the ultimate companion for amateur astronomers. Whether you're a beginner or an experienced observer, Lagoon helps you make the most of every clear night. WHAT'S VISIBLE TONIGHT Get a personalized list of observable objects based on your location, Bortle index, and current weather conditions. Objects are sorted by their optimal observation time during the night. MESSIER & NGC CATALOGUE Browse the complete Messier catalogue (110 objects) and the full NGC database. Filter by object type (nebula, galaxy, cluster…), magnitude, constellation, and apparent size. Each object includes a description, sky location map, current altitude, and best observation season. OBSERVATION LOGBOOK Log every session with date, location, observed objects, conditions (seeing, transparency, moon), equipment, free notes, sketches, and personal photos. Track your Messier progress with a visual grid and detailed statistics. OBSERVATION SITES Save your favorite spots — your backyard, a rural site, a mountain refuge. Get accurate Bortle index, real-time weather forecasts (cloud cover, seeing), and compare light pollution between your saved sites. SESSION PLANNER Know exactly when each object will be at its peak. Lunar calendar with phases, moonrise and moonset times. Set alerts when an object is about to reach its zenith. WIDGETS Quick-glance widgets for your home screen and lock screen: Bortle index, moon phase, tonight's top objects, and your observation window. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

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    Information

    Seller
    • Amélien BERNARD
    Size
    • 59.1 MB
    Category
    • Reference
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    Languages
    • English and French
    Age Rating
    4+
    In-App Purchases
    Yes
    • Lagoon Pro Lifetime $69.99
    • Lagoon Pro Annualy $44.99
    • Lagoon Pro Monthly $4.99
    • Learn More
    Copyright
    • © 2026 Amélien BERNARD
  • Developer Website
  • Privacy Policy