Space Odyssey vs Smithsonian
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Space Odyssey
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Space Odyssey application is filled with amazing facts about space to study, fun puzzles for kids, explore amazing photos of space and also there is quiz to test what you’ve learned about astronomy. Space Odyssey is an application designed for Space lovers. Soar into space and explore studying planets, moons, galaxies and much more on an exciting journey through our Space Odyssey. Learn about the history, mythology, and science of the heavens! Browse from hundreds of object descriptions, astronomical photographs structured in such a way as to cover all the topics that are required for beginners as well as for more advanced students and thereby provide a solid foundation in Astronomy to help them learn amazing facts about space. STUDY:: Learn about the stars, galaxies, Sun, the planets, moon, asteroids, comets, meteoroids, the Kuiper belt, the Milky Way, astronomy definition, astrochemistry telescope, gravity, asteroids , big bang, cosmology and lot more. Study mode is like astronomy dictionary with light weight and has a beautiful ui design which lets you search for the words while you type. In addition, all the terms are listed alphabetically with faster search facility, easy to navigate through entire app. STACK PLANETS:: It is puzzler to slide the planets around and put them together which teach student size, color and location of planets in solar system. Stack the Planets makes learning about solar system fun! Watch the planets actually come to life in this colorful and dynamic game! EXPLORE:: Explore amazing photos of the night sky, solar system images, planets, stars, moon, black holes, and much more. Pictures taken by DigiGalaxy expert astro photographers were also included in explore mode for you to enjoy. QUIZ:: Learner can put their Astronomy knowledge to test with the all new Space Odyssey Quiz! Every time you play you get random questions, so it never repeats.Test your knowledge and take the challenge! FEATURES:: ▪ Equipped with quick dynamic search function ▪ This app will work as a great pocket resource for Astronomy terms and definitions. ▪ Work Offline – It work offline, no active internet connection is required. Perfect for your trips or when no data connection is available. ▪ Every time you play quiz you get random questions, so it never repeats ▪ Simple and easy to play anywhere at any time! ▪ Easy to use controls make navigation a breeze. ▪ Entertaining, Fun, Educational and Challenging game for all ages
Smithsonian
Explore the solar system with interactive games and animations. Learn fascinating facts about planets, moons, and the asteroid belt. Designed for curious young minds to introduce astronomy basics.
- Fascinating facts about the solar system
- Mini games like Space Winter Rush
- Interactive activities
- Educational animations
- Read to Me text
- Collect planet badges
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Join us on an exciting voyage through the solar system! Play, touch, read. and learn facts about the 8 planets in our solar system in this new app from The ©Smithsonian and PlayDate Digital. Designed for curious minds, this app features brilliantly illustrated animations which are sure to engage and entertain. Why is Mars called the Red Planet? Which is the brightest Planet? How many moons does Neptune have? What is the Asteroid Belt? Explore Planets, learn facts, and play games as you rocket through the solar system. Your space enthusiast will love learning all about the wonders of space and the universe. The mini games reinforce the learnings and interactive activities will keep kids engaged. Features: • Lots of fascinating facts about our solar system, its planets, and more! • Featuring mini games including Space Winter Rush, Comet Ceasefire, Solar System Sorting, Gas Planets and more! • Over 10 other interactive activities related to your space adventure. • Educational content and animations will entertain and engage while teaching simple astronomy basics. • ‘Read to Me’ text • Collect solar system and planet badges as you complete each level Planets and the Solar System from ©Smithsonian Kids is designed to deliver on these Learning Goals: • STEM: Introduce young learners to astronomy and science methods. • STEM: Expand young learners' curiosity and knowledge of the world around them. • Counting and Quantifying: Identify and organize groups of objects logically. • Visual Discrimination: Distinguish between different shapes, sizes, colors. • Visual Memory: Remembering and recalling visual information. • Color Recognition and Differentiation: Identifying and naming colors. • Shape Recognition and Classification: Identifying objects based on different shapes. ABOUT THE SMITHSONIAN The ©Smithsonian is the world’s largest museum and research complex, dedicated to public education, national service, and scholarship in the arts, ©Smithsonian sciences, and history. The name of the ©Smithsonian Institution and the sunburst logo are registered trademarks of the ©Smithsonian Institution. For more information, please visit www.si.edu ABOUT PLAYDATE DIGITAL PlayDate Digital Inc. is a publisher of high-quality, interactive, mobile educational software for children. PlayDate Digital's products nurture children's emerging literacy and creativity skills by turning digital screens into engaging experiences. PlayDate Digital content is built in partnership with some of the world's most trusted global brands for kids. Visit us: playdatedigital.com Like us: facebook.com/playdatedigital Follow us: @playdatedigital Watch all our app trailers: youtube.com/PlayDateDigital1 HAVE QUESTIONS? We'd love to hear from you! Your questions suggestions and comments are always welcome. Contact us 24/7 at info@playdatedigital.com
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Verdict
The clearest difference is price: Smithsonian at Free against Space Odyssey's $2.99. Smithsonian also leads on update cadence (every 3 months vs every 19 months) and iOS requirement (13.0 vs 17.0). Space Odyssey's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Smithsonian is free to download; Space Odyssey costs $2.99 up front. Smithsonian sells 2 one-off in-app purchases. Space Odyssey asks for nothing beyond the download.
Space Odyssey ships an update every 19 months, Smithsonian every 3 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.
| Parameter | Space Odyssey | Smithsonian |
|---|---|---|
| Price | $2.99 | Free — better |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 19 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 285 MB |
| Age rating | 4+ | 4+ |
| Developer | DigiGalaxy | PlayDate Digital Inc. |
In-app purchases
Space Odyssey
No in-app purchases
Smithsonian
- Remove Ads$1.99
- Buy 5 Planets$2.99
Questions
Is Space Odyssey free?
Is Smithsonian free?
Do Space Odyssey or Smithsonian have ads?
Which is updated more often, Space Odyssey or Smithsonian?
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