Comparison

PepTracker vs Peptide Library and Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PepTracker

This app helps users meticulously track peptide and GLP-1 medication doses. It allows for the creation of structured protocols, scheduling of injections, and calculation of precise syringe volumes. Users can monitor progress over time and receive reminders for upcoming doses.

Highlights
  • Log injection doses
  • Build peptide/GLP-1 protocols
  • Built-in dose calculator
  • Schedule reminders
  • Track progress metrics
  • Export logs
Features
Read full description

Track. Schedule. Never miss a dose. PepTracker is a dose log and protocol tracker built for peptides, GLP-1 medications, and testosterone. Create structured protocols, schedule injections, calculate exact syringe volumes, and keep a clean record of your progress in one simple app. What you can do with PepTracker • Log doses, not guesses – Track every injection with an easy dose log instead of notes or spreadsheets. • Build peptide and GLP-1 protocols – Create schedules for Semaglutide, Tirzepatide, Retatrutide, BPC-157, AOD-9604, TRT, and more. • Use the built-in dose calculator – Enter vial amount, diluent volume, and target dose (mg or mcg) to get the exact mL or insulin-syringe units to draw. • Stay on schedule – Get reminders for upcoming doses and see what’s due today on the Home screen and in the calendar. • Track progress over time – Log weight and other metrics to see how your protocol is trending. Made for real protocols PepTracker works well whether you’re: • Running a GLP-1 weight loss protocol (e.g., Semaglutide, Tirzepatide). • Managing peptide stacks for recovery, performance, or wellness. • Keeping a consistent TRT schedule and dose history. PepTracker Premium (optional upgrade) Unlock more structure and flexibility for advanced protocols: • Unlimited protocols and peptide stacking in a single schedule. • Advanced scheduling options and extended calendar views. • Save calculator results directly into protocols. • Full protocol history plus mood and energy tracking. • Export logs to CSV/PDF and sync with external calendars (Apple and Google). PepTracker is built for people who take their peptides and GLP-1 protocols seriously and want a clear, reliable way to stay organized. Download PepTracker today and simplify your peptide tracking—one dose at a time. https://peptracker.app/terms-of-service https://peptracker.app/privacy-policy Disclaimer: PepTracker is for informational and tracking purposes only and does not provide medical advice. Always consult a qualified healthcare provider before starting, changing, or stopping any medication or peptide protocol.

About

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.

Highlights
  • Comprehensive Peptide Library & Database
  • Advanced Peptide Dose Calculator
  • Smart Tracking & Calendar View
  • Lab Inventory Management
  • Protocol Tracking & Lab Assistant
  • Integrated Peptide Education
Features
Read 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

Screenshots

PepTracker4 screens
Peptide Library and Tracker4 screens

Verdict

The call

The clearest difference is monetization model: Peptide Library and Tracker at free against PepTracker's freemium. Peptide Library and Tracker also leads on review sentiment (86% vs 77%) and iOS requirement (16.4 vs 18). PepTracker's advantage is ratings volume (413 vs 25). On price, rating, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PepTracker sells 2 in-app purchases, starting at $4.99 per month 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for PepTracker against 4.7 for Peptide Library and Tracker. That said, the two scores are not equally well evidenced: PepTracker has 413 ratings behind it against 25, so its average is the more settled of the two. Written reviews are what separate them: 77% of PepTracker's written reviews are positive against 86% of Peptide Library and Tracker's.

UpkeepUpdate frequency

PepTracker ships an update every 2 weeks, Peptide Library and Tracker every 10 days. The most recent releases landed on October 19, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
PepTracker versus Peptide Library and Tracker: the parameters behind the verdict, then further details
ParameterPepTrackerPeptide Library and Tracker
PriceFreeFree
Rating4.7 (413 ratings)4.7 (25 ratings)
Positive reviews77.4% of reviews85.7% of reviews — better
Number of ratings413 — better25
Update frequencyEvery 2 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS1816.4 — better
Further details — not scored
Size17 MB78 MB
Age rating17+17+
DeveloperJayven Alan Villagomez PeredoSuperfime LLC

Customer experience

PepTracker

All ratings413 ratings
Positive93.2%
Neutral2.7%
Negative4.1%
Written reviews62 reviews
Positive77.4%
Neutral6.5%
Negative16.1%

Peptide Library and Tracker

All ratings25 ratings
Positive92.0%
Neutral4.0%
Negative4.0%
Written reviews7 reviews
Positive85.7%
Neutral14.3%
Negative0.0%

Bugs and requests

PepTracker

Reported bugs

1 issue
  • Units function not working

Requested features

2 requests
  • Support for more units of measurement
  • Ability to track more than 2 protocols

Peptide Library and Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

PepTracker

Subscriptions2
  • Monthly$4.991 Month
  • Yeary7 Days trial$47.991 Year
2 purchases

Peptide Library and Tracker

Subscriptions2
  • Peptide Library Pro Monthly7 Days trial$4.991 Month
  • Peptide Library Pro Yearly7 Days trial$39.991 Year

Questions

Is PepTracker free?
PepTracker is free to download, with in-app purchases available.
Is Peptide Library and Tracker free?
Peptide Library and Tracker is free to download, with in-app purchases available.
Which has better reviews, PepTracker or Peptide Library and Tracker?
PepTracker and Peptide Library and Tracker are both rated 4.7 out of 5 on the App Store, from 413 and 25 ratings respectively.
Do PepTracker or Peptide Library and Tracker have ads?
Neither PepTracker nor Peptide Library and Tracker shows ads.
Which is updated more often, PepTracker or Peptide Library and Tracker?
PepTracker ships an update every 2 weeks, and Peptide Library and Tracker every 10 days. Most recently, PepTracker was updated on October 19, 2026 and Peptide Library and Tracker on October 16, 2026.

Other comparisons