Peptide Tracker vs Peptide Library and Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Peptide Tracker
Calculate peptide dosages and reconstitution accurately and quickly. Track your injections with timely reminders and live activities. Save custom formulas and sync across devices for seamless management.
- Peptide dosage calculation
- Reconstitution guidance
- Injection time tracking
- Custom formula saving
- Widget for daily doses
- Reminders and Live Activities
- iCloud sync across devices
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Track your peptide routines with a clear dose log, flexible schedules and reminders. PepFlow keeps your protocols and history together so you can see what is next and review what you have recorded. Keep your routine on track - Manage protocols for injections, injectable pens, oral medications, nasal sprays and topical products. - Save preparation details for your peptides for easy reference. - Keep separate schedules and reminders for each protocol. - Record doses and review your history. - See upcoming and recorded doses in the calendar. - Check your schedule with widgets and Live Activities. - Sync your protocols and tracking history across iPhone and iPad with iCloud. - Add scheduled doses to Apple Calendar and Reminders. Consult a healthcare professional before making medical decisions. PepFlow PRO Some features require a PepFlow PRO purchase. Payments are handled through your Apple Account. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the current period ends. Manage subscriptions in your Apple Account settings. Lifetime purchases are a one-time payment and do not renew. Questions or feedback? Contact hi@pepflow.app Terms of Service: https://pepflow.app/terms-of-service/ Privacy Policy: https://pepflow.app/privacy-policy/
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
Screenshots
Verdict
The clearest difference is monetization model: Peptide Library and Tracker at free against Peptide Tracker's free with in-app purchases. Peptide Library and Tracker also leads on iOS requirement (16.4 vs 18.0). Peptide Tracker's advantage is ratings volume (439 vs 25). On price, rating, review sentiment and update cadence 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 Tracker sells 11 in-app purchases, starting at $0.99 per 7 days and Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 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 — 4.8 for Peptide Tracker against 4.7 for Peptide Library and Tracker. That said, the two scores are not equally well evidenced: Peptide Tracker has 439 ratings behind it against 25, so its average is the more settled of the two. Written reviews are what separate them: 79% of Peptide Tracker's written reviews are positive against 86% of Peptide Library and Tracker's.
Peptide Tracker ships an update fortnightly, Peptide Library and Tracker every 10 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | Peptide Tracker | Peptide Library and Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (439 ratings) — better | 4.7 (25 ratings) |
| Positive reviews | 79.3% of reviews | 85.7% of reviews — better |
| Number of ratings | 439 — better | 25 |
| Update frequency | Fortnightly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 181 MB | 78 MB |
| Age rating | 4+ | 17+ |
| Developer | keinois OU | Superfime LLC |
Customer experience
Peptide Tracker
Peptide Library and Tracker
In-app purchases
Peptide Tracker
- PepFlow PRO (Weekly)3 Days trial$0.997 Days
- PepFlow PRO (Monthly)3 Days trial$2.991 Month
- PepFlow PRO (Weekly)3 Days trial$2.997 Days
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- Peptide PRO (Weekly)3 Days trial2 variants$2.997 Days
- PepFlow PRO (Weekly)3 Days trial3 variants$3.997 Days
- PepFlow PRO (Annual)3 Days trial$8.991 Year
- PepFlow PRO (Monthly)3 Days trial2 variants$9.991 Month
- Peptide PRO (Annual)3 Days trial$14.991 Year
- Peptide PRO (Annual)3 Days trial$19.991 Year
- PepFlow PRO (Annual)3 Days trial2 variants$29.991 Year
- Peptide PRO (Annual)3 Days trial$44.991 Year
Peptide Library and Tracker
- Peptide Library Pro Monthly7 Days trial$4.991 Month
- Peptide Library Pro Yearly7 Days trial$39.991 Year
Questions
Is Peptide Tracker free?
Is Peptide Library and Tracker free?
Which has better reviews, Peptide Tracker or Peptide Library and Tracker?
Do Peptide Tracker or Peptide Library and Tracker have ads?
Which is updated more often, Peptide Tracker or Peptide Library and Tracker?
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