# PDB Viewer vs Magpie

The clearest difference is in-app purchases: Magpie at none against PDB Viewer's 1. Magpie also leads on update cadence (every 5 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. Magpie asks for nothing beyond the download.

PDB Viewer ships an update monthly, Magpie every 5 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PDB Viewer | Magpie |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Size | 2 MB | 23 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qvyshift LLC](https://appshunter.io/developer/1536442361) | [Yuchen Zhou](https://appshunter.io/developer/6779877828) |

## 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 |


### Magpie

[App page](https://appshunter.io/ios/app/magpie-molecular-analysis/id6779877826)

**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 Magpie free?

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

### Do PDB Viewer or Magpie have ads?

Neither PDB Viewer nor Magpie shows ads.

### Which is updated more often, PDB Viewer or Magpie?

PDB Viewer ships an update monthly, and Magpie every 5 days. Most recently, PDB Viewer was updated on October 16, 2026 and Magpie 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.*