# القصص vs PDB Viewer

The clearest difference is in-app purchases: القصص at none against PDB Viewer's 1. القصص also leads on iOS requirement (12.0 vs 16.0). PDB Viewer's advantage is update cadence (monthly vs every 57 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. القصص asks for nothing beyond the download.

القصص ships an update every 57 months, PDB Viewer monthly. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | القصص | PDB Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 57 months | **Monthly** |
| Size | 56 MB | 2 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Noura AlGhurair](https://appshunter.io/developer/1483427072) | [Qvyshift LLC](https://appshunter.io/developer/1536442361) |

## What reviewers say

### القصص

[App page](https://appshunter.io/ios/app/id1484311164)

**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 القصص free?

القصص 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 القصص or PDB Viewer have ads?

Neither القصص nor PDB Viewer shows ads.

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

القصص ships an update every 57 months, and PDB Viewer monthly. Most recently, القصص was updated on November 7, 2026 and PDB Viewer on November 10, 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.*