# BioViewer vs PPQR

The clearest difference is iOS requirement: PPQR at 8.0 against BioViewer's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | BioViewer | PPQR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/bioviewer/id1593006498/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free | — |
| Size | 9 MB | 41 MB |
| Requires iOS | 17.0 | **8.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Raul Monton Pinillos](https://appshunter.io/developer/1576884003) | [Girish Mathur](https://appshunter.io/developer/1117813658) |

## What reviewers say

### BioViewer

[App page](https://appshunter.io/ios/app/bioviewer/id1593006498)

Visualize 3D molecular structures from .pdb files on iOS, iPadOS, and macOS. Features smooth rendering, drag-and-drop support, and publication-quality photo exports for detailed analysis.

**Highlights:** 3D molecular structure visualization, Supports .pdb and .xyz files, Drag and drop functionality, Photo Mode with high-quality exports, Multi-model PDB support, Optimized for ProMotion displays

**In-app purchases:** none


### PPQR

[App page](https://appshunter.io/ios/app/ppqr/id1660740004)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BioViewer free?

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

### Is PPQR free?

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

### Do BioViewer or PPQR have ads?

Neither BioViewer nor PPQR shows ads.

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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.*