# CycleChem vs Chem Viewer

The clearest difference is in-app purchases: Chem Viewer at none against CycleChem's 1. Chem Viewer also leads on update cadence (every 4 days vs every 6 months) and iOS requirement (11.0 vs 16.6). CycleChem's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. CycleChem sells 1 one-off in-app purchase. Chem Viewer asks for nothing beyond the download.

CycleChem ships an update every 6 months, Chem Viewer every 4 days. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CycleChem | Chem Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/chem-viewer/id1571068897/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | — | Ad-supported |
| Size | 8 MB | 40 MB |
| Requires iOS | 16.6 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eric ORDONNEAU](https://appshunter.io/developer/1465804393) | [Dylan Riffle](https://appshunter.io/developer/1142744409) |

## What reviewers say

### CycleChem

[App page](https://appshunter.io/ios/app/cyclechem/id1465804394)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all games | $0.99 | one-time |


### Chem Viewer

[App page](https://appshunter.io/ios/app/chem-viewer/id1571068897)

Visualize chemical compounds in 2D and 3D with this app. Access over 3 million compounds from the PubChem database and interact with 3D models using touch gestures. Ideal for students, researchers, and educators.

**Highlights:** 2D and 3D chemical views, Access to 3+ million compounds, PubChem database integration, Interactive 3D model manipulation, Suitable for students and researchers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CycleChem free?

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

### Is Chem Viewer free?

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

### Do CycleChem or Chem Viewer have ads?

Chem Viewer shows ads; CycleChem does not.

### Which is updated more often, CycleChem or Chem Viewer?

CycleChem ships an update every 6 months, and Chem Viewer every 4 days. Most recently, CycleChem was updated on October 7, 2026 and Chem Viewer on October 24, 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.*