Mobile Observatory Freemium

Wolfgang Zima

In-app purchases

About this app

Mobile Observatory: discover the wonders of the night sky with a beautiful, photorealistic sky view. This free astronomy app lets you explore the cosmos from your location with an interactive sky map featuring 45,000 stars.

What's included for free:
• Photorealistic sky view with physically accurate atmospheric rendering — the only app on Android that simulates atmospheric scattering for a truly realistic sky
• Live sky map showing stars, planets, and constellations visible from your location
• Basic information on celestial objects
• Rise, set, and transit times for the Sun, Moon, and planets
• Twilight times and length of day
• Moon phases and current sky conditions

Unlock all features with Premium:
Upgrade to Premium for the complete Mobile Observatory experience:

• 2.5 million additional stars for download
• Augmented reality sky view using your device's camera
• Interactive 3D Solar System visualization
• Satellite tracking including ISS and all Starlink satellites
• 60,000+ minor planets with daily orbital updates
• 1,000+ comets with daily updates
• Complete deep sky catalogs (Messier, NGC, Caldwell, Hidden Treasures)
• Lunar and solar eclipse predictions with visibility maps
• Meteor shower calendar with peak times and rates
• Daily celestial event notifications
• Home screen widgets
• Push events to your calendar with reminders
• Tonight's Best observation recommendations
• Favorites and observation logging
• Detailed object information and descriptions

Whether you're a curious beginner taking your first look at the stars or an experienced observer wanting to try before you buy, Mobile Observatory Free gives you a taste of the most comprehensive astronomy app on Android.

Download now and start exploring the universe tonight.

What’s new

Version 4.1.3

Bug fixes and stability improvements