# Solubility Products vs Chem Viewer

The clearest difference is price: Chem Viewer at Free against Solubility Products's $3.99. Chem Viewer also leads on update cadence (every 4 days vs every 4 months) and iOS requirement (11.0 vs 17.0). Solubility Products's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Chem Viewer is free to download; Solubility Products costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Solubility Products ships an update every 4 months, Chem Viewer every 4 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Solubility Products | Chem Viewer |
| --- | --- | --- |
| Price | $3.99 | **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 | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | — | Ad-supported |
| Size | 1 MB | 40 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Dylan Riffle](https://appshunter.io/developer/1142744409) |

## What reviewers say

### Solubility Products

[App page](https://appshunter.io/ios/app/solubility-products/id981052864)

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

**In-app purchases:** none


### 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 Solubility Products free?

Solubility Products costs $3.99, with no in-app purchases.

### Is Chem Viewer free?

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

### Do Solubility Products or Chem Viewer have ads?

Chem Viewer shows ads; Solubility Products does not.

### Which is updated more often, Solubility Products or Chem Viewer?

Solubility Products ships an update every 4 months, and Chem Viewer every 4 days. Most recently, Solubility Products was updated on November 1, 2026 and Chem Viewer on November 3, 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.*