Astraea: Learn Astronomy
Constellations and sky stories
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Explore four new regions, collect keepsakes and learn by exploring the sky. Start with an idea, then discover what explains it.
Learn astronomy by exploring. Observe the stars, test your intuition and discover what explains what you see. Astraea connects astronomy, history and mythology through interactive lessons, maps and challenges that help you understand the universe. No previous knowledge needed.
Observe, think and discover
Explore constellation maps, make a prediction and reveal its explanation. Each activity invites you to connect ideas and understand them. A contextual glossary helps with the words you encounter.
History, mythology and the science of the sky
Discover stars, planets and galaxies, and learn how people have observed, named and studied the sky. Explore myths, stories and traditions from different cultures. Scientific explanations and traditions are presented in their own context. Four new regions explore the solar system's past, space travel, cosmic images and the skies of Japan.
Keep your discoveries
Unlock 19 collectibles connected to what you learn. Explore their details, find out what each piece represents and choose a favorite for your profile. Customize your rocket and follow your journey with streaks and achievements.
A question for every day
Open the journal, discover an idea and try the daily quiz. Widgets bring part of the sky to your Home Screen. Return to the Atlas to explore its maps.
Return to what you want to understand
The Observatory brings together review and learning tools. One review session is available free each day. Premium expands access and adds tools to track and revisit your learning; see the available benefits in the app.
Available in English and Spanish. The app contains ads and optional subscriptions. Prices, billing periods and the terms of any eligible offer are shown before purchase. Manage your subscription through the relevant store.
Privacy Policy: https://astraea-app.com/privacy-en
Terms and Conditions: https://astraea-app.com/terms-en
Title: Astraea Premium Monthly. Duration: 1 month. Price: 3.99 USD.
Title: Astraea Premium Annual. Duration: 1 year. Price: 39.99 USD.
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Explore four new regions, 23 lessons and 30 journal entries. Discover a collection of 19 illustrated objects, customize your rocket and enjoy new animations and feedback as you learn. The Observatory brings together tools to return to what you want to understand.
The developer, Jose Carlos Villarreal, 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 Linked to You
The following data may be collected and linked to your identity:
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Accessibility
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Information
- Seller
- Jose Carlos Villarreal
- Size
- 76.9 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Astraea Premium Annual $39.99
- Astraea Premium Monthly $3.99
- Copyright
- © 2026 José Carlos Villarreal