Comparison

Back in Time for iPhone vs Space Odyssey

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Back in Time for iPhone

Explore the history of the universe, Earth, life, and civilization through interactive timelines, stunning visuals, and custom animations. This app offers an immersive learning experience with social and historical context for key events.

Highlights
  • Interactive timelines
  • Over 350 images
  • 60+ animations and videos
  • 200+ interesting facts
  • Offline access
  • Multilingual support
Features
Read full description

• "...a beautifully executed lesson on the history of the universe" - The New York Times • Winner of the WSA Mobile Award • Top1 iPhone Book App in 10 Countries • Featured by The New York Times (Top10 iPad Apps of the year) • Featured by the American Photo Magazine (Top 10 Photo eBooks of the year) For iPad download - Back in Time Back in Time will take you on a stunning exploration of the history of our Universe, Earth, Life and Civilization. A journey through time where each event is documented with social and historical context, several images, an illustrative timeline and little-known interesting facts. Custom made animations bring those events to life, creating an interesting, immersive learning experience. An imaginary clock will guide you through this quest, proposing a simple analogy: the entire Universe started 24 hours ago. The Big Bang, the source of time and space, is the first event in our journey – the clock reads 0:00 hours. Today, 13.7 billion years later, the clock reads midnight. In between is a sequence of key events that has brought us to where we are today. Explore them, place them in perspective, see how they relate and understand the connections. We invite you to take a step back and see the whole picture. :::: REVIEWS - iPad version :::: "The coolest history textbook you’ll find on the iPad" - Bob Tedeschi, The New York Times “The iPad could use more apps like this one.” - The Daily “...a beautifully executed lesson on the history of the universe and the evolution of life on earth. Great for high school students or parents who’d like to tutor younger children and enjoy a first-rate experience of their own...” - Bob Tedeschi, The New York Times “...the best iPad apps are those that combine coffee table-styled books with the fluid nature of the iPad’s interface. Back in Time is just that, it’s the story of the entire history of our universe made interactive on the iPad.” - Casey Chan, Gizmodo (App of the Day) “Back in Time is utterly gorgeous in its presentation. (...) The app is so easy to navigate that it is a delight to explore. Landka could scarcely have done a better job in putting everything together.” - Gwen Phua, Appmodo :::: FEATURES :::: Designed for iPhone; 47 chapters; Over 350 remarkable images; 60+ amazing animations and videos; 40+ illustrated timelines; More than 200 little-known interesting facts; Music by the compositor Rodrigo Leão; Developed in 7 different languages (English, Spanish, German, French, Portuguese, Japanese and Chinese); No internet connection required.

About

Space Odyssey

Features
Read full description

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

Screenshots

Back in Time for iPhone4 screens
Space Odyssey4 screens

Verdict

The call

The clearest difference is update cadence: Back in Time for iPhone at every 8 months against Space Odyssey's every 19 months. Space Odyssey's advantage is price ($2.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Back in Time for iPhone costs $4.99 and Space Odyssey $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Back in Time for iPhone ships an update every 8 months, Space Odyssey every 19 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

Scorecard2 real differences · 8 level
Back in Time for iPhone versus Space Odyssey: the parameters behind the verdict, then further details
ParameterBack in Time for iPhoneSpace Odyssey
Price$4.99$2.99 — better
Rating3.8 (16 ratings) — better—
Positive reviews71.7% of reviews—
Number of ratings16 — better—
Update frequencyEvery 8 months — betterEvery 19 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.0
Further details — not scored
Size625 MB55 MB
Age rating4+4+
DeveloperLandkaDigiGalaxy

In-app purchases

None

Back in Time for iPhone

No in-app purchases

None

Space Odyssey

No in-app purchases

Questions

Is Back in Time for iPhone free?
Back in Time for iPhone costs $4.99, with no in-app purchases.
Is Space Odyssey free?
Space Odyssey costs $2.99, with no in-app purchases.
Do Back in Time for iPhone or Space Odyssey have ads?
Neither Back in Time for iPhone nor Space Odyssey shows ads.
Which is updated more often, Back in Time for iPhone or Space Odyssey?
Back in Time for iPhone ships an update every 8 months, and Space Odyssey every 19 months. Most recently, Back in Time for iPhone was updated on November 6, 2026 and Space Odyssey on November 7, 2026.

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