PepSeek vs Peptidia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PepSeek
This app is a comprehensive search engine for peptide research, offering detailed profiles on over 200 peptides and pre-built research stacks. It includes an AI assistant for instant answers and a reconstitution calculator for accurate dosing.
- Search 200+ peptides
- 75+ pre-built research stacks
- PepBot AI assistant
- Reconstitution calculator
- Save favorites
- Preferred supplier list
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PepSeek is the all-in-one peptide research database and protocol tracker for biohackers, longevity researchers, and athletes. Look up any research peptide, see how strong the evidence behind it actually is, and keep track of what you're running. Covers Semaglutide, Tirzepatide, Retatrutide, BPC-157, TB-500, CJC-1295, Ipamorelin, Sermorelin, Tesamorelin, Epithalon, GHK-Cu, and nearly 200 more. 200+ PEPTIDE PROFILES Every major research peptide, with mechanism of action, research status, researched dosing ranges, administration methods, and half-life. Written in plain language, not abstract-speak. EVIDENCE LEVELS Every peptide is labeled well studied, emerging, or limited data, so you can tell decades of literature from a single mouse study. Research sources link straight to PubMed. This is the part other peptide apps leave out. 75 STACK PROTOCOLS Curated combinations for healing and recovery, fat loss, muscle growth, cognition, longevity, sleep, and immune support. Each one explains what's in it and why those peptides belong together. PEPBOT AI ASSISTANT Ask anything in plain English and get an answer grounded in the research. Powered by Claude. PROTOCOL LOG Track what you're running, see what's due today, and log doses as you go. Syncs between your phone and pepseek.app. RECONSTITUTION REFERENCE A nine-section guide covering bacteriostatic water, storage and handling, syringe basics, and the mistakes people make most often. FAVORITES Save peptides and stacks to your own library for quick reference. BUILT FOR IPAD Two-pane search and a full stacks grid on the bigger screen. PRIVACY Search, peptide profiles, stacks, favorites, and the reference guide all work without an account. Only the protocol log asks you to sign in, because it syncs your data between your phone and the web. We don't sell your data, and we never will. WHAT IT COSTS PepSeek has two separate purchases. A free preview is available before you buy either one. Research, $14.99 paid once. 200+ peptide profiles, 75 stack protocols, evidence levels and PubMed citations, favorites, and free updates as new peptides are added. No subscription, no expiry. Pro, $4.99 per month or $39.99 per year. The protocol log, dose tracking, and PepBot, synced between your phone and pepseek.app. The yearly plan starts with a 3-day free trial. Pro Monthly is tracking only and does not include Research. Pro Yearly includes Research permanently — once your first year bills, the database stays yours even if you later cancel. SUBSCRIPTION DETAILS Pro Monthly is an auto-renewing subscription at $4.99 per month. Pro Yearly is an auto-renewing subscription at $39.99 per year and begins with a 3-day free trial. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours of the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. If you take the free trial, any unused portion is forfeited when you buy a subscription. Terms of Use: https://pepseek.app/terms Privacy Policy: https://pepseek.app/privacy HEALTH DISCLAIMER PepSeek is for educational and research purposes only. It is not intended to provide medical guidance. The compounds described are research chemicals. PepSeek makes no medical claims and does not give medical advice. Consult a qualified healthcare professional before using any substance. A Risen Works creation.
Peptidia
Track peptide usage privately with a personal lab and access a research-backed encyclopedia. Organize records, monitor observations, and explore scientific evidence with an AI research assistant. Features include health data integration and vial management.
- Private peptide tracking
- Source-backed encyclopedia
- Personalized research library
- AI research assistant
- Health data integration
- Vial management and reminders
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Track your peptide journey and check the evidence behind the claims. Peptidia brings a private Lab together with a source-backed peptide encyclopedia. Keep personal records organized, follow your observations over time, and explore research with the Peptarch as your guide. YOUR PRIVATE LAB • Record products, amounts, routes, and subcutaneous sites. See your day's records beside an anatomy map. • Convert amounts using the concentration and syringe scale you enter. • Keep a journal of mood, energy, sleep, and personal notes. • Connect Apple Health, if you choose, to view weight, resting heart rate, sleep, and steps. Glucose and blood pressure are separately optional. • Explore dated observations and trends. Changes over time do not establish that a peptide caused them. • Organize vials in a visual Vault. Record fridge or freezer history, preparation details, and dates from your label or pharmacy instructions. • Set private check-in and vial-date reminders. New Lab records are encrypted on your iPhone, excluded from backups, and never sent to Peptidia's servers or the Peptarch. Apple Health access is read-only and optional. Earlier cloud journal entries are copied into the Lab once, automatically; their server copies remain until account deletion. RESEARCH YOU CAN CHECK • 80+ curated peptide profiles in English and French • Research Watch, with weekly literature checks and optional alerts when indexed evidence changes • Evidence Passports showing research maturity, source depth, strongest source tier, and review date • Direct links to PubMed, DOI sources, and clinical trials • A library ordered around your research interests • The Peptarch, a research assistant with citations you can inspect • No ads, vendors, or affiliate links LEARN WITH THE PEPTARCH Explore sourced anatomy and measurement references, or test your understanding in short quizzes with explanations and practice for missed questions. Educational math starts with empty fields and uses only the values you enter. A guided, animated welcome introduces Evidence, Peptarch, Learn, and the Lab. Your research interests still shape the library. Peptidia provides education and personal recordkeeping. It does not provide medical advice, diagnose or treat conditions, generate protocols, or recommend taking anything. Library content and AI responses do not provide specific peptide doses. Consult a licensed healthcare professional with health questions. Vial records and reminders do not establish product safety or shelf life. Peptidia is for adults 18+. It is not intended for use during pregnancy or breastfeeding, with active cancer, or by anyone under 18. SUBSCRIPTION Peptidia Pro Monthly: $9.99/month, no free trial. The subscription automatically renews unless canceled at least 24 hours before the end of the current period. A limited $59.99 lifetime option may be available. Manage subscriptions in iPhone Settings > Apple Account > Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://peptidia.app/legal/privacy
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Verdict
The clearest difference is monetization model: PepSeek at free with in-app purchases against Peptidia's subscription. Peptidia's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, rating, ratings volume and ads 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. PepSeek sells 1 one-off in-app purchase and Peptidia sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for PepSeek against 5.0 for Peptidia. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
PepSeek ships an update every 5 weeks, Peptidia every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | PepSeek | Peptidia |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 6 MB | 64 MB |
| Age rating | 4+ | 17+ |
| Developer | Risen Works LLC | DR DAVE INC. |
Customer experience
PepSeek
Peptidia
In-app purchases
PepSeek
- PepSeek Full Access$1.99
Peptidia
- Peptidia Pro1 Month trial$9.991 Month
- Peptidia Monthly$9.991 Month
- Peptidia Lifetime$59.99









