Comparison

Back in Time for iPhone vs Go Perform Skills

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

Go Perform Skills

Features
Read full description

Transform your learning with GO PERFORM Skills! Say goodbye to boring, traditional methods. GO PERFORM Skills is your ultimate learning companion, designed for speed, efficiency, and results. Key features: Level Detection: Know where you stand (beginner, intermediate, or expert). Real-Time Feedback: Video explanations tailored to your mistakes. AI Chat Assistant: Available 24/7 for questions and guidance. Certification: Validate your skills and progress to expert levels. Collaborative Community: Learn, share, and grow together. Whether you're building new skills or sharpening existing ones, GO PERFORM Skills is the smartest way to achieve your goals. Start your journey now and become the expert you've always wanted to be!

Screenshots

Back in Time for iPhone4 screens
Go Perform Skills4 screens

Verdict

The call

The clearest difference is price: Go Perform Skills at Free against Back in Time for iPhone's $4.99. Go Perform Skills also leads on update cadence (every 3 weeks vs every 8 months) and device support (3 vs 1). On ads and in-app purchases 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

Go Perform Skills is free to download; Back in Time for iPhone costs $4.99 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, Go Perform Skills every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Back in Time for iPhone versus Go Perform Skills: the parameters behind the verdict, then further details
ParameterBack in Time for iPhoneGo Perform Skills
Price$4.99Free — better
Rating3.8 (16 ratings) — better—
Positive reviews71.7% of reviews—
Number of ratings16 — better—
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size625 MB63 MB
Age rating4+17+
DeveloperLandkaGo Sell

In-app purchases

None

Back in Time for iPhone

No in-app purchases

None

Go Perform Skills

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 Go Perform Skills free?
Go Perform Skills is free to download, with no in-app purchases.
Do Back in Time for iPhone or Go Perform Skills have ads?
Neither Back in Time for iPhone nor Go Perform Skills shows ads.
Which is updated more often, Back in Time for iPhone or Go Perform Skills?
Back in Time for iPhone ships an update every 8 months, and Go Perform Skills every 3 weeks. Most recently, Back in Time for iPhone was updated on October 23, 2026 and Go Perform Skills on October 25, 2026.

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