Peptide Library and Tracker
Track, Log & Compare Peptides
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Compare vendor prices, calculate reconstitution and doses, track inventory, and browse a research library. Log protocols and stay consistent—built for peptide research.
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.
SUPPLIER PRICES
Search supported suppliers and 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 and Pro Yearly subscriptions are available. Prices are shown in the App Store for your region. 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
more • Sign in with Apple or Google: create your account or sign in with one tap.
• A new welcome tour for new users: see everything Peptide Library can do, from the research library and calculators to tracking and progress, then set up your first peptide and schedule in a few minutes.
• Community usernames: pick a username to join the Community. Posts now show who wrote them.
• Simpler Pro plans: compare every Pro option on one screen, with the price and any free trial shown before you buy.
• What's New in Settings: catch up on recent updates anytime.
• Plus performance improvements and bug fixes.
2.6.0 4 days ago
Bug fixes and stability improvements.
2.5.3 24 Sept
Expanded peptide research library with updated profiles, protocols, and reconstitution notes.
Added an email preferences control in Settings so you can manage marketing emails.
Improved account deletion.
Bug fixes and stability improvements.
2.5.2 6 Sept
Bug fixes and stability improvements.
Still included in this version:
• Peptide calculator — mg, mcg, IU, reconstitution, and stacks
• Peptide tracker — logs, schedules, reminders, and calendar
• Inventory with low-stock alerts
• Research library and Peptide School
• Vendor price comparison
For research and education only.
2.5.1 26 Aug
Bug fixes to improve user experience
2.5.0 13 Aug
This update adds a new section for Ready to Use Injectables, making it easier to track protocols that do not require reconstitution, while keeping them separate from peptides that need to be mixed before use.
New in this version:
• Added support for Ready to Use Injectables
• Separated ready to use injectables from peptides that require reconstitution
• Improved tracking and organization for different protocol types
• Updated inventory and dosing flow to better support injectable products
• General bug fixes and performance improvements
Thank you for continuing to help us improve Peptide Library.
2.3.8 1 Jul
This update adds a new section for Ready to Use Injectables, making it easier to track protocols that do not require reconstitution, while keeping them separate from peptides that need to be mixed before use.
New in this version:
• Added support for Ready to Use Injectables
• Separated ready to use injectables from peptides that require reconstitution
• Improved tracking and organization for different protocol types
• Updated inventory and dosing flow to better support injectable products
• General bug fixes and performance improvements
Thank you for continuing to help us improve Peptide Library.
2.3.7 7 Jun
UI improvements, onboarding for new users and bug fixes
2.3.2 21 May
Bug fixes and UI enhancements
2.3.0 24 Apr
This is one of our biggest updates yet — introducing a fully integrated Community, Reputation System, and Learning Hub inside Peptide Library.
Community Q&A Forum
• Ask questions, share protocols, and post research experiences
• Upvote/downvote posts and comments
• Mark a Best Answer
• Tag posts and link them to specific peptides
• Upload images with posts
• Full-text search for faster discovery
• Reporting + moderation system
Reputation & Tier System
• Earn points for helpful contributions
• Tier ladder progression (Reader → Associate → Research Associate → Analyst → Librarian)
• Best answer bonuses and engagement rewards
• Daily caps and anti-spam protections
• Profile reputation tracking
Peptide School
• Structured courses and lessons
• Lesson and course completion tracking
• Earn reputation for completing educational content
Vendor Reviews & Shop Improvements
• Multi-criteria vendor reviews
• Verified purchase indicators
• Vendor transparency & quality scoring
• Favorite vendors and peptide offers
• Review voting system
Trends & Analytics
• “Rising Fastest” peptide tracking
• Favorites sparkline data
• Community engagement insights
Tracker Enhancements
• Reputation for logging doses, metrics, inventory, and journal entries
• Secure cloud progress photo storage
• Daily activity-based rewards
Notifications
• In-app notifications for replies, upvotes, and best answers
• Notification center inside the app
Expanded FAQ System
• Organized FAQ categories
• Helpful voting
• Share and copy tools
2.2.0 22 Mar
New Cost Calculator for Peptides
We’ve added a brand-new Costing tab to the Calculator, making it easier to track peptide costs and plan long-term usage.
Calculate cost per mg, cost per dose, cost per week, and cost per month
Automatically syncs with your peptide dose calculator
Supports powder peptides (mg) and liquid peptides (mg/mL)
Adjust dose frequency to see real-time cost changes
Save inputs so your peptide cost data is always available
Enhanced Peptide Calculator Experience
Calculator is now organized into clear Dose and Costing tabs
Faster calculations and improved usability
Cleaner, more intuitive layout for tracking peptide protocols
Bug Fixes & Performance Improvements
Improved stability and performance
Minor UI refinements across the calculator
This update helps you better track peptide dosing, compare peptide costs, manage monthly expenses, and plan research protocols with confidence.
1.4.5 2 Feb
New Cost Calculator for Peptides
We’ve added a brand-new Costing tab to the Calculator, making it easier to track peptide costs and plan long-term usage.
Calculate cost per mg, cost per dose, cost per week, and cost per month
Automatically syncs with your peptide dose calculator
Supports powder peptides (mg) and liquid peptides (mg/mL)
Adjust dose frequency to see real-time cost changes
Save inputs so your peptide cost data is always available
Enhanced Peptide Calculator Experience
Calculator is now organized into clear Dose and Costing tabs
Faster calculations and improved usability
Cleaner, more intuitive layout for tracking peptide protocols
Bug Fixes & Performance Improvements
Improved stability and performance
Minor UI refinements across the calculator
This update helps you better track peptide dosing, compare peptide costs, manage monthly expenses, and plan research protocols with confidence.
1.4.4 31 Jan
This update delivers major improvements to tracking, inventory, and reminders—making Peptide Library faster, smarter, and easier to use.
Enhanced Tracker Experience
Improved UX on the peptide tracker for faster, more intuitive logging
Enhanced schedule and time picker components for precise dose timing
Expanded peptide history tracking for better long-term insights
Inventory Management Improvements
New inventory management tools to track quantities with greater accuracy
Quantity adjustment improvements for easier dose and stock updates
Updated inventory repositories for better reliability across SQLite, web, and in-memory storage
Smarter Notifications & Reminders
Reminder preset functionality to quickly reuse common dosing schedules
Enhanced notification reliability for scheduled peptide reminders
Bug Fixes & Performance Enhancements
Stability improvements and bug fixes across tracking and inventory features
General performance optimizations for a smoother experience
Peptide Library continues to evolve as a powerful peptide tracking app, peptide inventory manager, and research peptide log designed for longevity, wellness, and optimization.
1.4.2 27 Jan
This update delivers major improvements to tracking, inventory, and reminders—making Peptide Library faster, smarter, and easier to use.
Enhanced Tracker Experience
Improved UX on the peptide tracker for faster, more intuitive logging
Enhanced schedule and time picker components for precise dose timing
Expanded peptide history tracking for better long-term insights
Inventory Management Improvements
New inventory management tools to track quantities with greater accuracy
Quantity adjustment improvements for easier dose and stock updates
Updated inventory repositories for better reliability across SQLite, web, and in-memory storage
Smarter Notifications & Reminders
Reminder preset functionality to quickly reuse common dosing schedules
Enhanced notification reliability for scheduled peptide reminders
Bug Fixes & Performance Enhancements
Stability improvements and bug fixes across tracking and inventory features
General performance optimizations for a smoother experience
Peptide Library continues to evolve as a powerful peptide tracking app, peptide inventory manager, and research peptide log designed for longevity, wellness, and optimization.
1.4.0 26 Jan
This update makes Peptide Library more powerful, accurate, and easier to use for serious peptide tracking.
• Enhanced peptide inventory tracking
Track vial amounts, remaining quantities, and reconstitution volumes with greater precision, making it easier to manage your peptide supply over time.
• Smarter peptide reminder presets
New built-in reminder schedules (Daily, M/W/F, Every 3 Days) with intelligent notifications that automatically skip alerts if you’ve already logged your dose—no more unnecessary reminders.
• Improved peptide calculator
Added mL unit support for more flexible and accurate dosing calculations, especially when working with different reconstitution volumes.
• More reliable notifications
Improved notification delivery and background reliability so reminders trigger consistently when you need them.
• Better dark mode & accessibility
Refined dark mode visuals, improved contrast, and accessibility enhancements for a smoother experience across all lighting conditions.
• Performance & stability improvements
General bug fixes and stability enhancements for a faster, more dependable peptide tracker experience.
Additional bug fixes
1.3.1 7 Jan
Join the Peptide School Community! Connect with fellow researchers, share experiences, and get expert support in our exclusive community chat. Access in-depth courses, research insights, protocol discussions, and members-only promotions—all in one place. Request your invite directly from the app to start connecting with the peptide research community today.
1.2.8 19/12/2025
NEW: Search Peptide Vendors & Compare Pricing. Also added visual syringe for dosing.
Alongside research tools, the app now includes a powerful Peptide Search & Vendor Comparison Engine to help users find the best price per mg across multiple trusted peptide shops.
You can now:
-Search for any peptide across supported vendors
-Instantly compare prices, vial sizes, and cost-per-mg
-View real-time stock availability
-Access exclusive affiliate discounts where available
-Quickly jump to the vendor’s product page or home page using smart links
-Whether you’re checking multiple stores or looking for the cheapest peptide option, the app’s automated price indexing keeps your results accurate and up to date.
Additional bug fixes
1.2.7 14/12/2025
NEW: Search Peptide Vendors & Compare Pricing. Also added visual syringe for dosing.
Alongside research tools, the app now includes a powerful Peptide Search & Vendor Comparison Engine to help users find the best price per mg across multiple trusted peptide shops.
You can now:
-Search for any peptide across supported vendors
-Instantly compare prices, vial sizes, and cost-per-mg
-View real-time stock availability
-Access exclusive affiliate discounts where available
-Quickly jump to the vendor’s product page or home page using smart links
-Whether you’re checking multiple stores or looking for the cheapest peptide option, the app’s automated price indexing keeps your results accurate and up to date.
Additional bug fixes
1.2.6 10/12/2025
• Sign in with Apple or Google: create your account or sign in with one tap.
• A new welcome tour for new users: see everything Peptide Library can do, from the research library and calculators to tracking and progress, then set up your first peptide and schedule in a few minutes.
• Community usernames: pick a username to join the Community. Posts now show who wrote them.
• Simpler Pro plans: compare every Pro option on one screen, with the price and any free trial shown before you buy.
• What's New in Settings: catch up on recent updates anytime.
• Plus performance improvements and bug fixes.
more Version 2.6.0 4 days ago
Data Linked to You The following data may be collected and linked to your identity:
Health & Fitness Purchases Location Contact Info User Content Identifiers Usage Data Data Not Linked to You The following data may be collected but it is not linked to your identity: