BioViewer vs Protein Sequence Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BioViewer
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.
- 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
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A .pdb protein visualizer for iOS, iPadOS and macOS. View the 3D representation of any molecular structure from a .pdb file, using our custom Metal-based rendering engine based to allow for a smooth experience even in the biggest proteins. - Full drag and drop support for .pdb and .xyz files. - Photo Mode with publication-quality exports. - Support for multi-model PDBs. - Support for high refresh rate ProMotion displays.
Protein Sequence Viewer
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Protein Sequence Viewer is an iOS application designed for rapid retrieval of protein sequences (single-letter format) and lengths (amino acids) from UniProtKB/Swiss-Prot (reviewed entries). Simply enter a gene name or UniProt ID (Accession or Entry name) to access the data you need. Key Features: Gene name and UniProt ID search (Swiss-Prot reviewed entries only) Canonical sequence display with isoform switching via dropdown menu Downloadable offline databases for Human, Mouse, Rat, and Yeast—enabling searches without internet connectivity Streamlined interface focused on sequences and lengths One-tap sequence copying to clipboard Data Source: All sequence data is retrieved from UniProt.
Screenshots
Verdict
The clearest difference is ads: BioViewer at none against Protein Sequence Viewer's shown. Protein Sequence Viewer's advantage is update cadence (every 2 days vs every 9 days) and iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BioViewer ships an update every 9 days, Protein Sequence Viewer every 2 days. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.
| Parameter | BioViewer | Protein Sequence Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Raul Monton Pinillos | Kazunari Sasaki |
In-app purchases
BioViewer
No in-app purchases
Protein Sequence Viewer
No in-app purchases
Questions
Is BioViewer free?
Is Protein Sequence Viewer free?
Do BioViewer or Protein Sequence Viewer have ads?
Which is updated more often, BioViewer or Protein Sequence Viewer?
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