Peptide Library and Tracker vs Protocol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Peptide Library and Tracker
This app serves as a comprehensive guide and lab assistant for peptide research. It offers a detailed peptide library, dose calculation tools, and advanced tracking features for logging, inventory management, and protocol adherence. Users can also access educational content and community Q&A to enhance their research workflow.
- Comprehensive Peptide Library & Database
- Advanced Peptide Dose Calculator
- Smart Tracking & Calendar View
- Lab Inventory Management
- Protocol Tracking & Lab Assistant
- Integrated Peptide Education
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Peptide Tracker and Library The all-in-one peptide calculator, peptide tracker, and research library for protocols, inventory, and precise dosing. Calculate, log, and stay consistent — in one research tool. PEPTIDE CALCULATOR Convert mg, mcg, and IU. Calculate reconstitution, vial concentration, injection volume, and multi-peptide stacks. Save recent calculations for the next session. PEPTIDE TRACKER Log every dose with time and notes. Set schedules and reminders. Use the calendar to review cycles, streaks, and missed doses. Track symptoms and journal entries alongside each protocol. INVENTORY See how much is left in each vial, capsule, or spray. Get low-stock and reorder alerts. Inventory updates when you log a dose. RESEARCH LIBRARY Browse a peptide database with protocols, mechanisms, reconstitution notes, PubMed references, and molecular data. Open Peptide School courses, guides, and FAQs when you want structured learning. VENDOR PRICES Search supported vendors, compare price per mg, check stock, and unlock available discounts — without leaving the app. PROGRESS Log weight, body composition, and progress photos. Charts show how your research notes change over time. BUILT FOR RESEARCH WORKFLOWS Fast search. Offline use. Optional account sync. Local-first storage. For research and educational purposes only. Not medical advice. Not for human consumption. Consult a qualified professional before any protocol. Subscription Information Pro Monthly — $5.99/month Pro Yearly — $49.99/year Subscription auto-renews unless turned off 24 hours before the end of the current period. Manage subscriptions in your App Store account settings. Privacy Policy: https://peptidelibrary.app/privacy EULA: https://peptidelibrary.app/terms
Protocol
This app helps users meticulously track peptide cycles, logging each injection with customizable details. It provides comprehensive guides on reconstitution, injection techniques, and safety, alongside personalized reminders and progress tracking.
- Log peptide injections with customizable details
- Curated library of 25+ compounds
- Add custom compounds and edit entries
- Streak counter and dose history
- Per-peptide reminders with native iOS notifications
- Built-in safety and how-to guides
- Personalized onboarding based on goals and experience
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Protocol is the ultimate lab app for your peptide cycles — a premium iOS tracker for people who treat their stack seriously. Log every injection in micrograms, ride the streak, and keep your reconstitution, injection technique, and safety guides one tap away. WHAT YOU CAN DO Build your stack - Add from a curated library of 25+ compounds: BPC-157, TB-500, Tirzepatide, Cagrilintide, Retatrutide, Semaglutide, GHK-Cu, CJC-1295 (no DAC), Ipamorelin, Sermorelin, Tesamorelin, NAD+, MOTS-c, Humanin, SS-31, AOD-9604, Pinealon, Selank, Semax, DSIP, PT-141, KPV, Thymosin alpha-1, VIP, SLU-PP-332. - Configure each entry: dose amount in micrograms, milligrams, or IU; frequency (daily, every other day, twice daily, post-workout, weekly, custom); a color tag; private notes. - Add custom compounds outside the library. Edit or pause any entry at any time. Log doses in one tap - The Today screen shows your full stack. Tap "Log" — the dose is recorded with the right amount, unit, and timestamp. - Mistapped? Undo the last log instantly. - A day badge shows how many doses you've taken for each peptide today (×1, ×2, ×3). Streaks and history - Streak counter on Today and Profile counts consecutive days with at least one dose. - "This week" and "All time" totals sit next to the streak. - Pull to refresh; everything syncs to the cloud the moment you tap. Reminders that match real protocols - Per-peptide reminders: pick times of day, days of week, AM/PM windows, post-workout cues. - Native iOS notifications, respectful of Do Not Disturb and Focus modes. - The Notifications screen logs every reminder fire and streak milestone in one feed. Built-in safety and how-to guide - 10 in-app chapters written for the peptide-curious and the long-cycle stacker: • Important disclaimer — what this app is and isn't • Your first cycle — where to start • Reconstitution — mixing lyophilized peptides safely • Injection technique (subQ) in 6 steps • Storage & shelf life — lyophilized vs reconstituted • Side effects — common, rare, and red flags • Stacking & cycling — combinations that make sense • Bloodwork to monitor — what to test and when • Sourcing & purity — how to verify what you're injecting • Legal status — know what's allowed where you live Tailored from day one - Onboarding asks two questions: what are you here for (recovery, longevity, performance, GH, cognitive, metabolic, sleep, sexual, immune, skin, weight loss) and your experience level (new, some experience, advanced). - Library and protocol suggestions adjust accordingly. Edit goals & experience anytime from your profile. Profile and identity - Display name, handle, bio, avatar. - At-a-glance stats: total doses logged, current streak, active goals. - Sign in with Email or Google. Privacy-first — no social feed, no public timeline, no follower count. WHAT'S INTENTIONAL - No ads, no social feed, no in-app purchases inside the tracker. - Your data stays yours. WHO IT'S FOR - People running 1–5 compounds at a time who keep their dose log in Notes and forget which vial they're three days into. - First-cycle users who want a clean reference for reconstitution and injection technique before they self-experiment. - Long-cycle stackers who want streaks, weekly volume, and full historical doses on tap. DISCLAIMER Peptide is a tracking and reference tool, not a medical device. Nothing in the app is medical advice or a prescription. Consult a qualified physician before starting any protocol. TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Protocol at every 2 days against Peptide Library and Tracker's every 10 days. Protocol also leads on rating (5.0 vs 4.7). Peptide Library and Tracker's advantage is ratings volume (25 vs 1). On price, ads, in-app purchases and monetization model 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. Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month and Protocol sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Protocol holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Peptide Library and Tracker has 25 ratings behind it against 1, so its average is the more settled of the two.
Peptide Library and Tracker ships an update every 10 days, Protocol every 2 days. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.
| Parameter | Peptide Library and Tracker | Protocol |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (25 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 25 — better | 1 |
| Update frequency | Every 10 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 17.5 |
| Further details — not scored | ||
| Size | 78 MB | 47 MB |
| Age rating | 17+ | 12+ |
| Developer | Superfime LLC | Alexandre Masmejean |
In-app purchases
Peptide Library and Tracker
- Peptide Library Pro Monthly7 Days trial$4.991 Month
- Peptide Library Pro Yearly7 Days trial$39.991 Year
Protocol
- Protocol Pro7 Days trial$1.997 Days
- Protocol Pro1 Year trial$39.991 Year
Questions
Is Peptide Library and Tracker free?
Is Protocol free?
Which has better reviews, Peptide Library and Tracker or Protocol?
Do Peptide Library and Tracker or Protocol have ads?
Which is updated more often, Peptide Library and Tracker or Protocol?
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