# Smart Laboratory School vs PDB Viewer

The clearest difference is in-app purchases: Smart Laboratory School at none against PDB Viewer's 1. Smart Laboratory School also leads on iOS requirement (12.0 vs 16.0). PDB Viewer's advantage is update cadence (monthly vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. PDB Viewer sells 1 one-off in-app purchase. Smart Laboratory School asks for nothing beyond the download.

Smart Laboratory School ships an update every 6 months, PDB Viewer monthly. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Smart Laboratory School | PDB Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/smart-laboratory-school/id6748944814/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 98 MB | 2 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [C.S. InfoTech](https://appshunter.io/developer/1239116634) | [Qvyshift LLC](https://appshunter.io/developer/1536442361) |

## What reviewers say

### Smart Laboratory School

[App page](https://appshunter.io/ios/app/smart-laboratory-school/id6748944814)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDB Viewer

[App page](https://appshunter.io/ios/app/pdb-viewer-3d-molecules/id6777468488)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDB Viewer Pro | $9.99 | one-time |


## Frequently asked questions

### Is Smart Laboratory School free?

Smart Laboratory School is free to download, with no in-app purchases.

### Is PDB Viewer free?

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

### Do Smart Laboratory School or PDB Viewer have ads?

Neither Smart Laboratory School nor PDB Viewer shows ads.

### Which is updated more often, Smart Laboratory School or PDB Viewer?

Smart Laboratory School ships an update every 6 months, and PDB Viewer monthly. Most recently, Smart Laboratory School was updated on October 24, 2026 and PDB Viewer on October 16, 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.*