Comparison

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.

Head to head
About

Peptide Tracker

Easily log and track peptide and GLP-1 doses with timely reminders. Monitor your progress with weight check-ins and manage multiple schedules. Features include injection site rotation and supply tracking.

Highlights
  • Log doses with a tap
  • Scheduled dose reminders
  • Injection site rotation
  • Vial and supply tracking
  • Weight and progress tracking
  • Manage multiple peptides
  • Export PDF summary
Features
Read full description

Track every peptide and GLP-1 dose in one place. Get reminders on time, rotate injection sites and see your progress week by week. Features: - Log doses in a tap and keep a complete history - Reminders for every scheduled dose, with snooze and catch-up - Injection site rotation with a body map - Vial and supply tracking with restock reminders - Weight and check-ins to see how you're progressing - Manage multiple peptides and schedules in one place - Export a PDF summary to share with your clinician You enter the dose you've been prescribed. PepSync records it, reminds you when it's due and keeps your history. SUPPORT - Contact: https://www.muchadostudio.com/contact THIS APP REQUIRES A SUBSCRIPTION TO ACCESS CERTAIN FEATURES - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ IMPORTANT - PepSync is a personal tracking tool. It does not calculate or recommend doses and is not medical advice. Always follow your prescriber's instructions.

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 Library is the peptide tracker and peptide research library in one app. Plan your peptide schedule, get reminders, log every entry, keep your vial inventory up to date and look up any peptide, all in one place. Whether you research one peptide or a full stack, Peptide Library keeps your schedules, log history and inventory organized, on your device first. WHY PEPTIDE LIBRARY? ◉ TRACKER AND LIBRARY TOGETHER: read about a peptide, then add it to your schedule and inventory in a couple of taps. ◉ INVENTORY THAT KEEPS UP: every entry you log updates what's left in your vials, capsules and sprays. ◉ BUILT FOR STACKS: several peptides, several forms, each on its own schedule. ◉ PRIVATE BY DEFAULT: works offline, with optional account sync and backup. PEPTIDE TRACKER • Schedules: daily, every other day, chosen weekdays, or cycles with on and off weeks. • Reminders for every scheduled entry, with one tap to log or skip. • Log entries with time, amount and notes; log several at once and undo a log. • Calendar: month and week views of what you logged, missed or skipped. • Separate schedules for each form of a peptide: vial, capsules or nasal spray. • Site rotation on a body map, with a suggested next site. • Research Streak: counts the scheduled days you complete and earns XP. PEPTIDE STACKS AND BLENDS • Track a whole stack, each peptide on its own schedule. • Save blends and log them together. PEPTIDE INVENTORY • Track every vial, capsule, nasal spray and ready-to-use container. • See what's left, estimated uses left, run-out and reorder-by dates. • Low-stock, reorder and expiry alerts. • Save the price, purchase and opened dates, vendor and COA for each container. JOURNAL, PROGRESS AND BODY METRICS • Journal: daily check-ins for mood, energy, sleep and symptoms, with trends and PDF or CSV export. • Progress photos with a guided camera, timeline and side-by-side compare. • Weight, body fat, lean mass and body measurements, with goals and trend charts. • Works with Apple Health: bring in your weight and body fat (optional, read only). PEPTIDE RESEARCH LIBRARY • Peptide profiles with mechanisms, research summaries, half-lives and PubMed references. • Compare peptides side by side and share the comparison. • Peptide School: courses, guides and FAQs. PEPTIDE TRENDS AND COMMUNITY • Peptide Trends: see what the community is researching and popular schedules. • Community Q&A with other researchers. • Compare vendor listings and prices per mg, with vendors that ship to you listed first, and read supplier reviews. WIDGETS • Home Screen, Lock Screen and StandBy widgets for today's schedule, your next entry, your streak and inventory. PEPTIDE LIBRARY PRO Pro unlocks unlimited tracking, blends, courses, progress tools, Peptide Trends, Community, supplier reviews and sync. Choose a monthly or yearly subscription or a one-time lifetime purchase. Prices and any free trial are shown in the app before you buy. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Manage or cancel them in your App Store account settings. For research and educational purposes only. Not medical advice. Not for human consumption. Consult a qualified professional before any protocol. Privacy Policy: https://peptidelibrary.app/privacy Terms of Use (EULA): https://peptidelibrary.app/terms

Screenshots

Peptide Tracker4 screens
Peptide Library and Tracker4 screens

Verdict

The call

The clearest difference is monetization model: Peptide Library and Tracker at free against Peptide Tracker's subscription. Peptide Library and Tracker also leads on review sentiment (86% vs 50%) and iOS requirement (16.4 vs 18.0). Peptide Tracker's advantage is ratings volume (177 vs 28). 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. Peptide Tracker sells 10 in-app purchases, starting at $7.99 per 7 days and Peptide Library and Tracker sells 3 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 Peptide Tracker against 4.8 for Peptide Library and Tracker. That said, the two scores are not equally well evidenced: Peptide Tracker has 177 ratings behind it against 28, so its average is the more settled of the two. Written reviews are what separate them: 50% of Peptide Tracker's written reviews are positive against 86% of Peptide Library and Tracker's.

UpkeepUpdate frequency

Peptide Tracker ships an update weekly, Peptide Library and Tracker every 11 days. Both last shipped on November 9, 2026.

Scorecard4 real differences · 6 level
Peptide Tracker versus Peptide Library and Tracker: the parameters behind the verdict, then further details
ParameterPeptide TrackerPeptide Library and Tracker
PriceFreeFree
Rating4.7 (177 ratings)4.8 (28 ratings) — better
Positive reviews50.0% of reviews85.7% of reviews — better
Number of ratings177 — better28
Update frequencyWeekly — betterEvery 11 days
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS18.016.4 — better
Further details — not scored
Size42 MB95 MB
Age rating12+17+
DeveloperThomas StrathernSuperfime LLC

Customer experience

Peptide Tracker

All ratings177 ratings
Positive94.9%
Neutral0.6%
Negative4.5%
Written reviews12 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Peptide Library and Tracker

All ratings27 ratings
Positive92.6%
Neutral3.7%
Negative3.7%
Written reviews7 reviews
Positive85.7%
Neutral14.3%
Negative0.0%

In-app purchases

10 purchases

Peptide Tracker

Subscriptions8
  • Premium Weekly3 Days trial$7.997 Days
  • Premium Weekly$7.997 Days
  • Premium Annual - Deal$39.991 Year
Show 5 more
  • PepSync Yearly - 3 day trial3 Days trial$59.991 Year
  • PepSync Yearly - 7 day trial7 Days trial$59.991 Year
  • Premium Yearly7 Days trial$59.991 Year
  • Premium Annual - 3 Day Trial3 Days trial$59.991 Year
  • Premium Annual - 30 Day Trial1 Month trial$59.991 Year
One-time2
  • Premium Lifetime$39.99
  • PepSync Lifetime$59.99
3 purchases

Peptide Library and Tracker

Subscriptions3
  • Peptide Library Pro Monthly3 Days trial$4.991 Month
  • Peptide Library Pro Monthly Offer1 Month trial$4.991 Month
  • Peptide Library Pro Yearly3 Days trial$39.991 Year

Questions

Is Peptide Tracker free?
Peptide Tracker 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, Peptide Tracker or Peptide Library and Tracker?
Peptide Library and Tracker is rated higher. Peptide Tracker averages 4.7 out of 5 from 177 ratings, while Peptide Library and Tracker averages 4.8 from 28 ratings.
Do Peptide Tracker or Peptide Library and Tracker have ads?
Neither Peptide Tracker nor Peptide Library and Tracker shows ads.
Which is updated more often, Peptide Tracker or Peptide Library and Tracker?
Peptide Tracker ships an update weekly, and Peptide Library and Tracker every 11 days. Most recently, Peptide Tracker was updated on November 9, 2026 and Peptide Library and Tracker on November 9, 2026.

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