# COM vs Molecules that changed the World

The clearest difference is update cadence: Molecules that changed the World at every 3 weeks against COM's every 3 months. Molecules that changed the World also leads on iOS requirement (8.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

COM ships an update every 3 months, Molecules that changed the World every 3 weeks. The most recent releases landed on November 13, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | COM | Molecules that changed the World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (4 ratings)](https://appshunter.io/ios/app/molecules-that-changed-the-world/id1102745607/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 2 MB | 79 MB |
| Requires iOS | 16.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eduardo Galembeck](https://appshunter.io/developer/421224798) | [ZKM \| Zentrum fuer Kunst und Medientechnologie Karlsruhe](https://appshunter.io/developer/418549105) |

## What reviewers say

### COM

[App page](https://appshunter.io/ios/app/com-oxygen-consumption/id820289539)

**Features:** macOS Compatibility

**In-app purchases:** none


### Molecules that changed the World

[App page](https://appshunter.io/ios/app/molecules-that-changed-the-world/id1102745607)

Explore the scientific facts and captivating stories behind molecules that have shaped our world. Discover how basic compounds like water and complex synthetics like aspirin influenced culture, civilization, and life itself.

**Highlights:** Scientific facts about influential molecules, Stories of cultural and civilizational impact, Covers basic and synthetic compounds, Explains chemical background, Details historical and cultural influence

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is COM free?

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

### Is Molecules that changed the World free?

Molecules that changed the World is free to download, with no in-app purchases.

### Do COM or Molecules that changed the World have ads?

Neither COM nor Molecules that changed the World shows ads.

### Which is updated more often, COM or Molecules that changed the World?

COM ships an update every 3 months, and Molecules that changed the World every 3 weeks. Most recently, COM was updated on November 13, 2026 and Molecules that changed the World 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.*