Comparison

Back in Time for iPhone vs Cosmic Atlas

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

Cosmic Atlas

Explore a vast, scientifically rendered universe with lifelike exoplanets and detailed celestial bodies. Navigate through trillions of light years with multiple exploration modes, from first-person flight to telescopic identification. Discover and learn about thousands of planets beyond our solar system.

Highlights
  • Explore 5,000+ lifelike exoplanets
  • Navigate 180 trillion sq light years
  • Six interstellar travel modes
  • First-person planet view
  • Scientifically accurate renderings
  • Telescope identification mode
  • Detailed planet information panels
Read full description

Go beyond star gazing. Visit nearly 5,000 lifelike exoplanets and navigate 180 trillion square light years of the universe beyond our solar system. Featuring 6 modes of interstellar travel and examination, Cosmic Atlas is an open-world space exploration app for those who look up at the night sky and wonder what we may find in the infinite frontier of the universe. Try it free and fly anywhere in the solar system plus six bonus planetary systems for a total of 50+ stunning planets, moons, and dwarf planets. Upgrade for all the incredible planets and features to explore every corner of the Milky Way mapped by NASA, JPL, ESA, and other international space programs. ::::: VISIT THOUSANDS OF PLANETS ::::: First-person view of 4,987 recently discovered exoplanets with stunning 3D models featuring detailed atmospheres and surfaces using science-driven artist renderings, including: [•] Potentially habitable Earth-like planets in the Habitable Zone that can support liquid water [•] Hot terrestrial planets closer to the system's star with landscapes from windswept sands to volcanic infernos or oppressive Venus-like atmospheres [•] Cold terrestrial planets past the habitable zone covered with rocks, frozen deserts, or sheets of ice [•] Jovian gas giants with colorful cloud layers based on the elements visible in the upper atmosphere at different temperatures [•] Neptunian ice giants with outer clouds that appear glassy smooth or enveloped with strings of cool clouds ::PLUS:: High resolution planets, moons, and dwarf planets in our own Solar System created from enhanced NASA mission images ::::: MASSIVE OPEN COSMIC ENVIRONMENT ::::: [•] Over 180 trillion square light years of the Milky Way ready to explore at it’s true scale [•] 116,000+ unique stars individually colored to match their true color temperature in blue, yellow, or red spectrums [•] 3,710 unique planetary systems with confirmed exoplanets [•] Scientifically accurate star positions and luminosity to see what the night sky looks like from distant worlds [•] Data-rich information panels to learn about planet attributes, parent system, discovery method, and research programs credited with its discovery [•] Flag stars and planets to easily revisit later ::::: SIX EXPLORATION MODES ::::: [New!] Telescope :: to point your phone at the sky to identify planets, stars, and distant planetary systems Pilot :: with first person flight controls and autopilot to lock trajectory toward a selected destination Orbit :: to easily navigate systems and rotate or zoom in to examine planets Navigator :: to find nearby systems and planets or revisit saved planets Database :: to browse the complete catalog find new exoplanets, planetary systems, and stars Search :: to find specific stars and exoplanets or nearby planets, moons, and dwarf planets in our solar system ::::: SETTINGS ::::: HDR Lighting :: Active by default, HDR lighting shows realistic relative brightness of stars and planets. Toggle HDR off for consistent lighting with stars and the Milky Way always visible in the background. Systems Only :: Enable to hide labels for stars without exoplanets in Pilot, Navigator, & Telescope modes. Objects with Info Only :: Enable to hide labels for stars without detailed data available. ::::: DATA SOURCES ::::: Using the latest exoplanet data from programs by NASA and the European Space Agency, Cosmic Atlas is a true-to-scale 3D environment where users can freely explore our small section Milky Way galaxy and examine thousands of newly discovered stars and exoplanets. The latest planetary system data is collected from a number of public research programs, including the University of Puerto Rico's Planetary Habitability Laboratory and the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.

Screenshots

Back in Time for iPhone4 screens
Cosmic Atlas4 screens

Verdict

The call

The clearest difference is price: Cosmic Atlas at Free against Back in Time for iPhone's $4.99. Cosmic Atlas also leads on update cadence (every 3 weeks vs every 8 months) and ratings volume (65 vs 16). Back in Time for iPhone's advantage is in-app purchases (none vs 1) and review sentiment (72% vs 59%). On rating and ads 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

Cosmic Atlas is free to download; Back in Time for iPhone costs $4.99 up front. Cosmic Atlas sells 1 one-off in-app purchase. Back in Time for iPhone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.8 for Back in Time for iPhone against 3.7 for Cosmic Atlas. Both are backed by a comparable volume of ratings — 16 and 65 respectively. Written reviews are what separate them: 72% of Back in Time for iPhone's written reviews are positive against 59% of Cosmic Atlas's.

UpkeepUpdate frequency

Back in Time for iPhone ships an update every 8 months, Cosmic Atlas every 3 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

Scorecard8 real differences · 2 level
Back in Time for iPhone versus Cosmic Atlas: the parameters behind the verdict, then further details
ParameterBack in Time for iPhoneCosmic Atlas
Price$4.99Free — better
Rating3.8 (16 ratings) — better3.7 (65 ratings)
Positive reviews71.7% of reviews — better58.5% of reviews
Number of ratings1665 — better
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.014.0 — better
Further details — not scored
Size625 MB147 MB
Age rating4+4+
DeveloperLandkaCosmic Atlas LLC

Customer experience

Back in Time for iPhone

All ratings15 ratings
Positive73.3%
Neutral0.0%
Negative26.7%
Written reviews53 reviews
Positive71.7%
Neutral5.7%
Negative22.6%

Cosmic Atlas

All ratings63 ratings
Positive63.5%
Neutral7.9%
Negative28.6%
Written reviews41 reviews
Positive58.5%
Neutral12.2%
Negative29.3%

Bugs and requests

Back in Time for iPhone

Not enough reviews yet to summarise bugs or requests.

Cosmic Atlas

Reported bugs

8 issues
  • App crashes upon opening
  • Kicked out of the game
  • Cannot connect to server
  • Error that doesn't let user in
  • Planets brighten up unexpectedly
Show 3 more
  • Dark side of planets brightens up
  • Cannot buy upgrades
  • App became free after purchase, now requires new purchase for features

Requested features

7 requests
  • Add more solar system objects
  • Fix Haumea's shape
  • Add more candidates, dwarf moons, hypothetical objects, spacecrafts, anomalies, random asteroids, meteoroids, and comets
  • Add ability to go into planets and see a preview
  • Add more galaxies to travel to
Show 2 more
  • Add a search page/bar
  • Add control for enlarging text

In-app purchases

None

Back in Time for iPhone

No in-app purchases

1 purchases

Cosmic Atlas

One-time1
  • Premium Features$0.99

Questions

Is Back in Time for iPhone free?
Back in Time for iPhone costs $4.99, with no in-app purchases.
Is Cosmic Atlas free?
Cosmic Atlas is free to download, with in-app purchases available.
Which has better reviews, Back in Time for iPhone or Cosmic Atlas?
Back in Time for iPhone is rated higher. Back in Time for iPhone averages 3.8 out of 5 from 16 ratings, while Cosmic Atlas averages 3.7 from 65 ratings.
Do Back in Time for iPhone or Cosmic Atlas have ads?
Neither Back in Time for iPhone nor Cosmic Atlas shows ads.
Which is updated more often, Back in Time for iPhone or Cosmic Atlas?
Back in Time for iPhone ships an update every 8 months, and Cosmic Atlas every 3 weeks. Most recently, Back in Time for iPhone was updated on November 6, 2026 and Cosmic Atlas on November 4, 2026.

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