Protein Sequence Viewer vs Peptendium
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.
Peptendium
This app provides an educational platform for understanding peptide science. It features a library of peptide profiles, research summaries, and learning modules to enhance research literacy. It is designed for students and researchers, focusing on educational content rather than medical advice.
- 297 peptide profiles with detailed information
- Evidence signal to distinguish research maturity
- Curated research briefs and summaries
- Daily, weekly, and monthly research snapshots
- Structured learning modules and lessons
- Library search, filter, and comparison tools
- Private notebook for research organization
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Peptendium is an educational peptide research-literacy app built to help students, researchers, and science-curious learners understand peptide science — not dose it, prescribe it, or use it for treatment decisions. EXPLORE 297 PEPTIDE PROFILES Browse a structured educational library of 297 peptide profiles with sequence information, molecular details, family classifications, evidence context, and clear research summaries. UNDERSTAND THE EVIDENCE Peptendium helps you distinguish early-stage findings from stronger human evidence. Each profile includes an evidence signal designed to show how mature the available research is — not whether a peptide is effective or appropriate for use. RESEARCH BRIEFS Explore curated, rule-based summaries covering mechanisms, evidence, comparisons, and quiz-style learning. Research Briefs are generated from Peptendium’s bundled educational profile data and are designed for research literacy. DAILY RESEARCH HIGHLIGHTS Explore rotating educational research highlights, evidence context, signal matrices, watchlists, and source-quality information designed to support peptide research literacy. PEPTENDIUM ACADEMY Learn through eight structured modules and more than 50 lessons covering peptide foundations, receptor biology, amino acids, sequence concepts, research literacy, and evidence interpretation. LIBRARY AND COMPARISON TOOLS Search and filter the library by name, aliases, category, evidence, and sequence. Compare profiles side by side, open PubMed links, save profiles, and add personal notes. NOTEBOOK Build research collections, save profiles, create notes, track topics, and organize your learning in one private workspace stored on your device. DESIGNED WITH INTEGRITY Peptendium does not provide dosing instructions, protocols, stacks, prescribing, treatment recommendations, diagnosis, cure, prevention, or medical advice. All content is educational and should be independently verified. PEPTENDIUM PRO Free access includes core peptide reference content and educational tools. Peptendium Pro is available as a one-time lifetime unlock and includes premium research briefs, advanced comparison and research tools, Study Mode, expanded notes and export features, and additional research-literacy tools. No recurring subscription is required for the lifetime unlock. Privacy Policy: https://ocoeestudios.com/peptendium/privacy Terms of Use: https://ocoeestudios.com/peptendium/terms
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Verdict
The clearest difference is in-app purchases: Protein Sequence Viewer at none against Peptendium's 2. Protein Sequence Viewer also leads on update cadence (every 2 days vs monthly) and device support (3 vs 1). Peptendium's advantage is ads (none vs shown). On price 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. Peptendium sells 2 in-app purchases, starting at $9.99 per month. Protein Sequence Viewer asks for nothing beyond the download.
Protein Sequence Viewer ships an update every 2 days, Peptendium monthly. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.
| Parameter | Protein Sequence Viewer | Peptendium |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 25 MB | 39 MB |
| Age rating | 4+ | 12+ |
| Developer | Kazunari Sasaki | Ocoee Studios LLC |
In-app purchases
Protein Sequence Viewer
No in-app purchases
Peptendium
- Peptendium Pro7 Days trial$9.991 Month
- Peptendium Pro7 Days trial$79.991 Year
Questions
Is Protein Sequence Viewer free?
Is Peptendium free?
Do Protein Sequence Viewer or Peptendium have ads?
Which is updated more often, Protein Sequence Viewer or Peptendium?
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