Peptide Library and Tracker vs Peptide Stack
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
Read full descriptionHide full description
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
Peptide Stack
Track your GLP-1 medication doses and monitor your weight progress. This app supports various peptide medications and custom stacks, helping you manage your health journey.
- GLP-1 medication tracking
- Weight progress monitoring
- Custom peptide stack support
- Dose logging
- Subscription management
Read full descriptionHide full description
Whether you're on a GLP-1 medication, semaglutide, tirzepatide, or running a custom peptide stack. Subscription Details: - Monthly Plan: $9.99/month (auto-renews monthly) - Annual Plan: $49.99/year ($4.17/month, auto-renews annually) - Payment will be charged to your Apple ID account at confirmation of purchase - Subscription automatically renews unless canceled at least 24 hours before the end of the current period - Your account will be charged for renewal within 24 hours prior to the end of the current period - You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase Terms of Use (EULA): https://peptidestack.io/terms Privacy Policy: https://peptidestack.io/privacy
Screenshots
Verdict
The clearest difference is ads: Peptide Library and Tracker at none against Peptide Stack's shown. Peptide Library and Tracker also leads on rating (4.6 vs 4.2) and monetization model (free vs free with in-app purchases). Peptide Stack's advantage is update cadence (daily vs every 10 days). On price, 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. Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month and Peptide Stack sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Peptide Library and Tracker holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 20 and 5 respectively. Written reviews point the same way: 83% of Peptide Library and Tracker's written reviews are positive against 67% of Peptide Stack's.
Peptide Library and Tracker ships an update every 10 days, Peptide Stack daily. The most recent releases landed on September 12, 2026 and September 15, 2026 respectively.
| Parameter | Peptide Library and Tracker | Peptide Stack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (20 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 83.3% of reviews — better | 66.7% of reviews |
| Number of ratings | 20 — better | 5 |
| Update frequency | Every 10 days | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 58 MB | 13 MB |
| Age rating | 17+ | 12+ |
| Developer | Superfime LLC | Brandon King |
Customer experience
Peptide Library and Tracker
Peptide Stack
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
Peptide Stack
- Monthly Plan7 Days trial$9.991 Month
- Annual Plan7 Days trial$49.991 Year
Questions
Is Peptide Library and Tracker free?
Is Peptide Stack free?
Which has better reviews, Peptide Library and Tracker or Peptide Stack?
Do Peptide Library and Tracker or Peptide Stack have ads?
Which is updated more often, Peptide Library and Tracker or Peptide Stack?
Other comparisons
