# Organic Reactions vs Combus Edu

The clearest difference is in-app purchases: Combus Edu at none against Organic Reactions's 2. Combus Edu also leads on update cadence (every 4 months vs every 10 months) and iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Organic Reactions sells 2 one-off in-app purchases. Combus Edu asks for nothing beyond the download.

Organic Reactions ships an update every 10 months, Combus Edu every 4 months. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Organic Reactions | Combus Edu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (170 ratings)](https://appshunter.io/ios/app/organic-reactions/id1184085187/reviews)** | — |
| Number of ratings | **170** | — |
| Positive reviews | 68.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 39 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Florent Breton](https://appshunter.io/developer/1184085186) | [Shua Al-Madina Group](https://appshunter.io/developer/1665620791) |

## What reviewers say

### 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 |


### Combus Edu

[App page](https://appshunter.io/ios/app/combus-edu/id6744400039)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Organic Reactions free?

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

### Is Combus Edu free?

Combus Edu is free to download, with no in-app purchases.

### Do Organic Reactions or Combus Edu have ads?

Neither Organic Reactions nor Combus Edu shows ads.

### Which is updated more often, Organic Reactions or Combus Edu?

Organic Reactions ships an update every 10 months, and Combus Edu every 4 months. Most recently, Organic Reactions was updated on October 22, 2026 and Combus Edu on October 25, 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.*