자연과학OX vs The Relativity Tales
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Physics quizzes
- Chemistry quizzes
- Biology quizzes
- Earth science quizzes
- Subscription for explanations
- Practice quizzes
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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
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.
- Interactive thought experiments
- Narrative-driven learning
- Intuitive science exploration
- Exploration of spacetime concepts
- Courtroom thriller scenarios
- Space exploration narratives
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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
Verdict
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
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.
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.
| Parameter | 자연과학OX | The Relativity Tales |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 619 MB |
| Age rating | 4+ | 9+ |
| Developer | CHAE HYUCK LEE | Sang Heon Park |
Customer experience
자연과학OX
The Relativity Tales
In-app purchases
자연과학OX
- 단원 설정권1 Month trial$2.991 Month
- 무제한 해설권7 Days trial$3.991 Month
- 평생 자유 이용권$19.99
The Relativity Tales
- Unlock "The Relativity Tales"$4.99









