# PDB Viewer vs 晶体光学实验室

The clearest difference is in-app purchases: 晶体光学实验室 at none against PDB Viewer's 1. 晶体光学实验室 also leads on update cadence (every 2 days vs monthly). PDB Viewer's advantage is iOS requirement (16.0 vs 26.0). 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. 晶体光学实验室 asks for nothing beyond the download.

PDB Viewer ships an update monthly, 晶体光学实验室 every 2 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PDB Viewer | 晶体光学实验室 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Size | 2 MB | 6 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qvyshift LLC](https://appshunter.io/developer/1536442361) | [苏州苏哇科技有限公司](https://appshunter.io/developer/6815154716) |

## What reviewers say

### 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 |


### 晶体光学实验室

[App page](https://appshunter.io/ios/app/id6818200830)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDB Viewer free?

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

### Is 晶体光学实验室 free?

晶体光学实验室 is free to download, with no in-app purchases.

### Do PDB Viewer or 晶体光学实验室 have ads?

Neither PDB Viewer nor 晶体光学实验室 shows ads.

### Which is updated more often, PDB Viewer or 晶体光学实验室?

PDB Viewer ships an update monthly, and 晶体光学实验室 every 2 days. Most recently, PDB Viewer was updated on October 28, 2026 and 晶体光学实验室 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.*