Protein Sequence Viewer vs FoldVision
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
FoldVision
Visualize, analyze, and understand complex protein structures in interactive 3D. Explore detailed annotations, compare different structures, and generate plain-language explanations of protein functions. Export your work as images, videos, or 3D models.
- Interactive 3D protein rendering
- Searchable Protein Data Bank
- Plain-language protein explanations
- Structure comparison tools
- Detailed annotations and sequence view
- Nucleic acid helix building
- Exportable images, videos, and 3D models
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FoldVision turns the world's protein structures into something you can hold, turn, and understand. Search more than 200,000 experimentally determined structures from the Protein Data Bank, load AlphaFold and ESMFold predictions, or build a DNA or RNA helix from a typed sequence. Everything renders in interactive 3D — rotate it with a finger, zoom into an active site, and switch between ribbon, surface, ball-and-stick and space-filling views. EXPLAIN ANY PROTEIN Tap Explain and the app writes a plain-language account of what the protein does, grounded in curated UniProt data and generated privately on your device with Apple Intelligence. A guided tour walks you through the key regions, lighting up each one on the structure as it's described. Available in 11 languages. COMPARE TWO STRUCTURES Load two structures and see exactly what changed. Structural-change coloring shades every residue from blue (superposes) to red (diverges). Sequence-change coloring separates conserved residues from substitutions. Watch a smooth morph between two conformations, or set them side by side. EXPLORE THE DETAIL • Annotations — domains, active and binding sites, modifications, variants and mutagenesis, drawn from UniProt. Tap any one to spotlight it on the structure. • Sequence view — the full amino-acid sequence with secondary structure, hydrophobicity, charge and B-factor tracks. Tap a residue to find it in 3D. • Color by secondary structure, chain, hydrophobicity, charge, domain or confidence (pLDDT), with color-blind-safe palettes throughout. • Measure distances, pin points of interest, and see the ligands and ions bound in the structure. NUCLEIC ACIDS Fold an RNA sequence into its predicted secondary structure with ViennaRNA, or build an idealized DNA or RNA double helix from any sequence. SHARE YOUR WORK Export a still image, a spinning video, or a 3D USDZ model you can drop into a presentation or an AR scene. BUILT FOR EVERY DEVICE Designed for iPhone, iPad and Apple Vision Pro, with layouts tuned to each. Structure and annotation data come from the RCSB Protein Data Bank, UniProt, AlphaFold DB, ESM Atlas, InterPro and Reactome. Full credits are in the app.
Screenshots
Verdict
The clearest difference is ads: FoldVision at none against Protein Sequence Viewer's shown. Protein Sequence Viewer's advantage is iOS requirement (13.0 vs 26.0). On price, update cadence, 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.
Protein Sequence Viewer ships an update every 2 days, FoldVision daily. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | Protein Sequence Viewer | FoldVision |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Vision Pro |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 25 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Kazunari Sasaki | Scot Federman |
In-app purchases
Protein Sequence Viewer
No in-app purchases
FoldVision
No in-app purchases
Questions
Is Protein Sequence Viewer free?
Is FoldVision free?
Do Protein Sequence Viewer or FoldVision have ads?
Which is updated more often, Protein Sequence Viewer or FoldVision?
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