# iPhysics™ Pro vs Organic Reactions

The clearest difference is price: Organic Reactions at Free against iPhysics™ Pro's $2.99. Organic Reactions also leads on rating (4.7 vs 3.1) and review sentiment (68% vs 46%). iPhysics™ Pro's advantage is in-app purchases (none vs 2) and iOS requirement (9.0 vs 17.6). On update cadence, ads, monetization model and device support there is nothing between them.

Organic Reactions is free to download; iPhysics™ Pro costs $2.99 up front. Organic Reactions sells 2 one-off in-app purchases. iPhysics™ Pro asks for nothing beyond the download.

Organic Reactions holds the better App Store score, 4.7 against 3.1. That said, the two scores are not equally well evidenced: Organic Reactions has 170 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 46% of iPhysics™ Pro's written reviews are positive against 68% of Organic Reactions's.

iPhysics™ Pro ships an update every 7 months, Organic Reactions every 10 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | iPhysics™ Pro | Organic Reactions |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.1 (19 ratings)](https://appshunter.io/ios/app/iphysics-pro/id717125958/reviews) | **[4.7 (170 ratings)](https://appshunter.io/ios/app/organic-reactions/id1184085187/reviews)** |
| Number of ratings | 19 | **170** |
| Positive reviews | 45.9% of reviews | **68.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 10 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 104 MB | 16 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Antonio Giarrusso](https://appshunter.io/developer/1433879699) | [Florent Breton](https://appshunter.io/developer/1184085186) |

## What reviewers say

### iPhysics™ Pro

[App page](https://appshunter.io/ios/app/iphysics-pro/id717125958)

This app serves as a personal physics tutor, offering clear explanations for over 70 topics to help students pass exams. The Pro version expands content to over 120 topics, includes interactive quizzes, and provides step-by-step solved examples for problem-solving.

**Highlights:** Over 70 physics topics explained, Clear and simple explanations, Effective synthesis of formulas and theorems, Advanced search algorithm, Over 120 topics in Pro version, Interactive multiple choice quizzes, Step-by-step solved examples

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Organic Reactions

[App page](https://appshunter.io/ios/app/organic-reactions/id1184085187)

Access key functional group reactions and their mechanisms in organic chemistry. Quickly find links between reactants and products, including synthesis and protection reactions. Some advanced features and reaction lists require an additional purchase.

**Highlights:** Functional group reactions, Reaction mechanisms, Reactant-product links, Synthesis reactions, Protection reactions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One month subscription | $0.99 | one-time |
| Full App | $4.99 | one-time |


## Frequently asked questions

### Is iPhysics™ Pro free?

iPhysics™ Pro costs $2.99, with no in-app purchases.

### Is Organic Reactions free?

Organic Reactions is free to download, with in-app purchases available.

### Which has better reviews, iPhysics™ Pro or Organic Reactions?

Organic Reactions is rated higher. iPhysics™ Pro averages 3.1 out of 5 from 19 ratings, while Organic Reactions averages 4.7 from 170 ratings.

### Do iPhysics™ Pro or Organic Reactions have ads?

Neither iPhysics™ Pro nor Organic Reactions shows ads.

### Which is updated more often, iPhysics™ Pro or Organic Reactions?

iPhysics™ Pro ships an update every 7 months, and Organic Reactions every 10 months. Most recently, iPhysics™ Pro was updated on November 1, 2026 and Organic Reactions on November 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*