Comparison

자연과학OX vs The Relativity Tales

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

Head to head
About

자연과학OX

This app offers practice quizzes for recent natural science topics, covering physics, chemistry, biology, and earth science. It provides subscription options for enhanced learning features and detailed explanations.

Highlights
  • Physics quizzes
  • Chemistry quizzes
  • Biology quizzes
  • Earth science quizzes
  • Subscription for explanations
  • Practice quizzes
Features
Read full description

최근년도 자연과학(물리, 화학, 생물, 지구과학) 학습 ============================ [구독 안내] '단원 설정권' or '무제한 해설권' 구매 결정을 하면 iTunes 및 App Store를 통해 구독을 위한 모든 결제과정을 처리합니다. 해당 구독기간 만료 최소 24시간 전에 구독을 취소하지 않았다면 자동으로 다음달 구독을 시작합니다. 구독기간 만료 24시간 내에 iTunes 계정으로 서비스 비용이 청구되고 갱신요금을 확인합니다. 구매 이후 iTunes 계정 설정에서 구독을 확인하고 취소할 수 있습니다. [구독 취소방법] https://support.apple.com/ko-kr/HT202039 [서비스 이용약관] https://www.scienceox.kr/information/provision [개인정보 처리 방침] https://www.scienceox.kr/information/privacy

About

The Relativity Tales

Explore the principles of special relativity through interactive thought experiments and engaging narratives. This app transforms complex scientific concepts into intuitive experiences, making science accessible and emotionally resonant.

Highlights
  • Interactive thought experiments
  • Narrative-driven learning
  • Intuitive science exploration
  • Exploration of spacetime concepts
  • Courtroom thriller scenarios
  • Space exploration narratives
Features
Read full description

What if you ran close to the speed of light − would time really slow down? The Relativity Tales is an interactive science story that lets you experience Einstein's special relativity with your fingertips, no equations required. Play with the principles yourself, then step into stories where those very principles become the key. ■ Fingertips, not formulas Run the thought experiments Einstein could only perform in his head, right on your screen. Watch time flow differently for someone in motion, lengths shrink, and the very idea of "at the same time" fall apart before your eyes. ■ Stories where science is the plot Every principle you experience becomes the key to a story. · A courtroom thriller where the relativity of simultaneity cracks an impossible alibi · An explorer's dream of reaching the edge of the universe, made possible by length contraction · A moment where time seems to stand still, born from time dilation The moment you understand the science, the story starts to look different. ■ Contents Chapter 1. Lorentz Transformation − The invisible rules of spacetime Chapter 2. Relativity of Simultaneity − When "simultaneous" falls apart Chapter 3. A Story of Simultaneity − A spacetime-trick courtroom thriller Chapter 4. Length Contraction − The secret of shrinking distance Chapter 5. A Story of Length Contraction − An explorer's longing dream Chapter 6. Time Dilation − Does time keep a different beat? Chapter 7. A Story of Time Dilation − The moment time seemed to stop Chapter 8. Lorentz Playground − Lorentz transformation, your way ■ Perfect for - Science lovers who get a headache at the sight of equations - Anyone who watches a sci-fi movie and wants to know the science behind it - Anyone who's ever wondered, "So what IS relativity, anyway?" - Parents who want to share the wonder of science with their kids - Teachers looking for a great tool to show relativity in class ■ Good to know The first 3 chapters are free to play. The remaining chapters can be unlocked with an in-app purchase. School and institution inquiries: phyilm.official@gmail.com Take the equations out of science, add a story, and what remains is wonder. (science − equation + story = wonder) phyilm

Screenshots

자연과학OX4 screens
The Relativity Tales4 screens

Verdict

The call

The clearest difference is ads: 자연과학OX at none against The Relativity Tales's shown. The Relativity Tales's advantage is update cadence (every 10 days vs every 4 months). On price, review sentiment, in-app purchases and monetization model 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

Both are free to download. 자연과학OX sells 3 in-app purchases, starting at $2.99 per month and The Relativity Tales sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

자연과학OX ships an update every 4 months, The Relativity Tales every 10 days. The most recent releases landed on November 4, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 8 level
자연과학OX versus The Relativity Tales: the parameters behind the verdict, then further details
Parameter자연과학OXThe Relativity Tales
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 4 monthsEvery 10 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size26 MB619 MB
Age rating4+9+
DeveloperCHAE HYUCK LEESang Heon Park

Customer experience

자연과학OX

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

The Relativity Tales

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews20 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

자연과학OX

Subscriptions2
  • 단원 설정권1 Month trial$2.991 Month
  • 무제한 해설권7 Days trial$3.991 Month
One-time1
  • 평생 자유 이용권$19.99
1 purchases

The Relativity Tales

One-time1
  • Unlock "The Relativity Tales"$4.99

Questions

Is 자연과학OX free?
자연과학OX is free to download, with in-app purchases available.
Is The Relativity Tales free?
The Relativity Tales is free to download, with in-app purchases available.
Do 자연과학OX or The Relativity Tales have ads?
The Relativity Tales shows ads; 자연과학OX does not.
Which is updated more often, 자연과학OX or The Relativity Tales?
자연과학OX ships an update every 4 months, and The Relativity Tales every 10 days. Most recently, 자연과학OX was updated on November 4, 2026 and The Relativity Tales on November 12, 2026.

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