Physics Master vs Relatively Simple
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Physics Master
This app aids high school and undergraduate students in learning physics. It offers key concepts, formulas, practice questions with solutions, tutorial videos, and simulations to enhance understanding and problem-solving skills.
- Key physics concepts and formulas
- Practice and challenge question solutions
- Tutorial videos
- Quiz questions with feedback
- Physical process simulations
- Progress tracking
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This App aims to help high school and undergraduate students with their Physics education. The App lists key Physics concepts and formula that students need to master, provides practice and challenge question solutions, tutorial videos, and let students practice a lot of quiz questions along with feedbacks for enhancing physics problem-solving skills. The App can also simulate various physical processes to enhance your understanding of Physics concepts. If you think the App is useful for your study, please consider subscribing to our service, for which the standard Terms of Use applies. The details are in the following link: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.
Relatively Simple
This app offers an experiential explanation of Einstein's theory of Special Relativity. Designed by a Carnegie Mellon University professor, it breaks down complex concepts like spacetime and E=mc^2 for a general audience.
- Experiential learning approach
- Explains Special Relativity
- Demystifies complex physics concepts
- Designed by university professor
- Accessible for general audience
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When people hear the term "Einstein's theory of Special Relativity", they automatically assume its above their heads. You hear terms like "Space Time" and the famous equation "e=mc^2" and it sounds way too abstract to understand for someone without a PhD in Physics. Designed by Carnegie Mellon University's Dr. Ira Rothstein, this app is aimed at experientially explaining Einstein's theory of special relativity to anybody.
Screenshots
Verdict
The clearest difference is review sentiment: Relatively Simple at 100% against Physics Master's 50%. Relatively Simple also leads on rating (5.0 vs 2.0) and in-app purchases (none vs 11). On price, update cadence and device support 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. Physics Master sells 11 in-app purchases, starting at $0.99 per month. Relatively Simple asks for nothing beyond the download.
Relatively Simple holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: Relatively Simple has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Physics Master's written reviews are positive against 100% of Relatively Simple's.
Physics Master ships an update every 6 weeks, Relatively Simple monthly. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.
| Parameter | Physics Master | Relatively Simple |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 7 — better |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 86 MB | 434 MB |
| Age rating | 4+ | 4+ |
| Developer | Optimization Lab LLC | Ira Rothstein |
Customer experience
Physics Master
Relatively Simple
In-app purchases
Physics Master
- Pro Level Monthly$0.991 Month
- Pro Plus Level Monthly$1.991 Month
- Pro Level Yearly$7.991 Year
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- Super Plus Monthly$9.991 Month
- 100 Reward Points$0.99
- 200 + Bonus 10 Reward Points$1.99
- 300 + Bonus 20 Reward Points$2.99
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- 400 + Bonus 30 Reward Points$3.99
- 500 + Bonus 40 Reward Points$4.99
- 600 + Bonus 50 Reward Points$5.99
- 1000 + Bonus 100 Reward Points$9.99
Relatively Simple
No in-app purchases
Questions
Is Physics Master free?
Is Relatively Simple free?
Which has better reviews, Physics Master or Relatively Simple?
Do Physics Master or Relatively Simple have ads?
Which is updated more often, Physics Master or Relatively Simple?
Other comparisons
