COSMOS - 3D Solar System
Real-time planets & orbits
About
Explore a real-time 3D model of the solar system with accurate planetary positions and photo-realistic textures. Control time to view past or future celestial events and learn about planets and moons. This app is free and works offline.
What's New in COSMOS
1.3
November 5, 2026
What's new in this update: - Sky Event Alerts Get notified on the evening of celestial highlights — close planetary encounters, oppositions (the best viewing day of the year), and planetary alignments. Turn it on in Settings, then just tap a notification to see that day's solar system. - Vietnamese Language Support COSMOS now speaks 8 languages: Japanese, English, Chinese, Korean, Spanish, French, German, and Vietnamese. - Other Improvements - Added a tip option for those who'd like to support development - Introduced small, unobtrusive ads (never shown in fullscreen mode) to keep development going - Minor improvements and bug fixes Thank you for using COSMOS. A review helps more than you know!
MoreSubscriptions & In-App Purchases
$1.99
Support the Developer
A tip to support COSMOS. No features are unlocked
Developer apps
FAQ
What is COSMOS?
COSMOS is a 3D solar system model that displays planets and moons in their real-time positions based on orbital mechanics. You can explore celestial bodies, control time to see past or future events, and access detailed information.
Is COSMOS free to use?
Yes, COSMOS is free for everyone. All features are available without any paywalls. The app does include a small banner ad, but it does not obstruct the view.
Does COSMOS have ads?
Yes, COSMOS contains a small banner ad that is designed not to cover the view. The app is free to use, and this ad supports its development.
Can I use COSMOS offline?
Yes, COSMOS works offline. This means you can explore the solar system even when you are on a plane or in an area with no internet connection.
How accurate are the orbits in COSMOS?
The positions of all 8 planets and the Moon are computed from Keplerian orbital elements in real time, ensuring high accuracy for their celestial movements.
What devices does COSMOS support?
COSMOS is currently supported on iPhone and iPod devices. It is designed for iOS users who want to explore the solar system.
How often is COSMOS updated?
The latest version of COSMOS is 1.3, and it was last updated on November 5, 2026. Updates typically bring improvements and new features to enhance the user experience.
What age rating does COSMOS have?
COSMOS has an age rating of 4+. This makes it suitable for young children and provides an educational and engaging experience for them.
