Physics++ vs Radioactive Decay Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Physics++
This app provides a comprehensive collection of over 120 physics formulas across various topics like mechanics, relativity, and thermodynamics. It includes a search function, unit conversions, and physics constants, with many formulas featuring integrated calculators for easy problem-solving.
- 120+ physics formulas
- Mechanics, relativity, thermodynamics coverage
- Search function for formulas
- Integrated formula calculators
- Physics constants and unit conversions
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Physics++ is the perfect companion for physics students and students of other science classes. Physics++ is a collection of physics formulas. The more than 120 formulas cover the topics mechanics, relativity, fluid mechanics, thermodynamics and electrodynamics. In addition there is a small number of primitives and a section with often used units. Physics constants are also included. With the search function formulas can now be found even faster. Most formulas have a calculator attached to them. So you can easily calculate values in exercises. In future update the number of formulas and constants will be increased.
Radioactive Decay Simulator
This educational tool simulates radioactive decay for a group of atoms. Users can choose preset atoms or input custom half-lives to observe decay in real-time graphs. The simulator allows for adjustments in atom count and speed for efficient analysis.
- Emulates radioactive decay
- Select preset or custom atoms
- Adjust atom count
- Real-time decay graphs
- Adjustable simulation speed
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The Radioactive Decay Simulator emulates the radioactive decay of a group of like atoms. Users are able to select from a range of preset atoms, or enter the half-life of a specific atom that they wish to simulate. By adjusting the number of atoms, users are able to determine how even with a large number of atoms, the randomness of radioactive decay can be modeled. Users are able to observe the both number of decayed atoms as well as the number of non-decayed atoms remaining in a real time graph. The simulator can be sped up to allow atoms with a longer half-life to be analyzed quickly.
Screenshots
Verdict
The clearest difference is price: Radioactive Decay Simulator at Free against Physics++'s $0.99. Radioactive Decay Simulator also leads on review sentiment (100% vs 68%) and iOS requirement (9.3 vs 14.5). Physics++'s advantage is update cadence (every 5 weeks vs every 17 months) and chart position (#200 vs unranked). On rating, ads, in-app purchases 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
Radioactive Decay Simulator is free to download; Physics++ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 3.9 for Physics++ against 4.0 for Radioactive Decay Simulator. That said, the two scores are not equally well evidenced: Physics++ has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 68% of Physics++'s written reviews are positive against 100% of Radioactive Decay Simulator's.
Physics++ ships an update every 5 weeks, Radioactive Decay Simulator every 17 months. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.
| Parameter | Physics++ | Radioactive Decay Simulator |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.9 (8 ratings) | 4.0 (1 ratings) — better |
| Positive reviews | 68.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #200 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.5 | 9.3 — better |
| Further details — not scored | ||
| Size | 75 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Dominik Hauser | Alistair Shaw |
Customer experience
Physics++
Radioactive Decay Simulator
In-app purchases
Physics++
No in-app purchases
Radioactive Decay Simulator
No in-app purchases
Questions
Is Physics++ free?
Is Radioactive Decay Simulator free?
Which has better reviews, Physics++ or Radioactive Decay Simulator?
Do Physics++ or Radioactive Decay Simulator have ads?
Which is updated more often, Physics++ or Radioactive Decay Simulator?
Other comparisons
