# iMolview Lite vs PDB Viewer

The clearest difference is in-app purchases: iMolview Lite at none against PDB Viewer's 1. iMolview Lite also leads on iOS requirement (12.0 vs 16.0). PDB Viewer's advantage is update cadence (monthly vs every 9 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. iMolview Lite asks for nothing beyond the download.

iMolview Lite ships an update every 9 months, PDB Viewer monthly. The most recent releases landed on September 22, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | iMolview Lite | PDB Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/imolview-lite/id543731121/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Free | — |
| Size | 54 MB | 2 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Molsoft](https://appshunter.io/developer/431002309) | [Qvyshift LLC](https://appshunter.io/developer/1536442361) |

## What reviewers say

### iMolview Lite

[App page](https://appshunter.io/ios/app/imolview-lite/id543731121)

Explore 3D models of biological molecules like proteins and DNA from public databases. Visualize and customize molecular structures with various representations and coloring schemes. Analyze interactions and view your own structure files.

**Highlights:** 3D protein and DNA structure viewing, Drug molecule visualization, Customizable molecular representations, Individual atom/residue selection and coloring, Interaction analysis, Import custom structure files

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

**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 iMolview Lite free?

iMolview Lite 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 iMolview Lite or PDB Viewer have ads?

Neither iMolview Lite nor PDB Viewer shows ads.

### Which is updated more often, iMolview Lite or PDB Viewer?

iMolview Lite ships an update every 9 months, and PDB Viewer monthly. Most recently, iMolview Lite was updated on September 22, 2026 and PDB Viewer 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.*