# Molecule Lab vs BioViewer

The clearest difference is rating: Molecule Lab at 4.0 against BioViewer's 1.0. Molecule Lab also leads on review sentiment (50% vs 33%) and ratings volume (18 vs 1). BioViewer's advantage is update cadence (every 9 days vs every 24 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Molecule Lab holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: Molecule Lab has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Molecule Lab's written reviews are positive against 33% of BioViewer's.

Molecule Lab ships an update every 24 months, BioViewer every 9 days. The most recent releases landed on September 23, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Molecule Lab | BioViewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (18 ratings)](https://appshunter.io/ios/app/molecule-lab/id1434237899/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/bioviewer/id1593006498/reviews) |
| Number of ratings | **18** | 1 |
| Positive reviews | **50.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 1 MB | 9 MB |
| Requires iOS | **13.2** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Maxamix](https://appshunter.io/developer/667167982) | [Raul Monton Pinillos](https://appshunter.io/developer/1576884003) |

## What reviewers say

### Molecule Lab

[App page](https://appshunter.io/ios/app/molecule-lab/id1434237899)

Create and view 3D molecular models with an intuitive editor. Supports various elements, bond types, and conformations, with undo/redo functionality. Share your creations easily via messaging and email.

**Highlights:** Build molecules in 3D, Supports oxygen, nitrogen, chlorine, carbon, hydrogen, Double and triple bond creation, Branching and rotation conformations, Undo, redo, and delete controls, Save and edit molecules, Share via text, email, and other services

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Molecule Lab free?

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

### Is BioViewer free?

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

### Which has better reviews, Molecule Lab or BioViewer?

Molecule Lab is rated higher. Molecule Lab averages 4.0 out of 5 from 18 ratings, while BioViewer averages 1.0 from 1 ratings.

### Do Molecule Lab or BioViewer have ads?

Neither Molecule Lab nor BioViewer shows ads.

### Which is updated more often, Molecule Lab or BioViewer?

Molecule Lab ships an update every 24 months, and BioViewer every 9 days. Most recently, Molecule Lab was updated on September 23, 2026 and BioViewer on October 14, 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.*