PepTracker vs Peptide Library and Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Log injection doses
- Build peptide/GLP-1 protocols
- Built-in dose calculator
- Schedule reminders
- Track progress metrics
- Export logs
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The peptide tracker built for people who run real protocols. Track semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, TRT and more, all in one place. Log every injection, get reminded before you miss one, and see how much is left in every vial. Then let PepGuide set up your next protocol in one message, and PepPulse sum up how your week really went. MEET PEPGUIDE: YOUR AI PROTOCOL ASSISTANT • Build a protocol from one sentence, like "Retatrutide 2.5 mg every Sunday" • Ask about your own logs: "How consistent was I with BPC-157 this month?" • Ask general questions about peptides, by text or photo • Pick up any earlier conversation from your chat history MEET PEPPULSE: YOUR STACK, SUMMED UP • A clear AI summary of your week • Dose consistency for every compound in your stack • Symptom, mood and energy trends from your check-ins • Apple Health vitals alongside your protocols NEVER MISS A DOSE • Log each dose in seconds, with notes, exactly as your provider instructed • Daily, twice-daily, weekly, twice-weekly, monthly and custom schedules • Due, upcoming and missed-dose reminders • Vial supply tracking with doses left, days left, and a refill reminder before you run out • Apple Calendar and Google Calendar sync BUILT FOR SERIOUS STACKS • Run multiple compounds in one stacked protocol • Cycling, every-other-day and every-X-days schedules • Starter and advanced protocol templates • A built-in peptide library • A full calendar with month and hour-by-hour week views, plus protocol history and restore SEE YOUR PROGRESS • Weight, body fat, lean body mass and six body measurements • Weight, adherence and body fat goals • Two-way Apple Health sync for weight, body fat and waist • Full history and CSV export START FREE The free plan includes up to 3 protocols, dose logging, reminders, vial supply tracking, calendar sync, the peptide library, and 30 days of weight history. GO PREMIUM Premium unlocks PepGuide and PepPulse with a monthly AI allowance (optional top-ups available), unlimited protocols, stacking, advanced schedules and templates, the full calendar, mood and energy check-ins, body fat and body measurements, editing past entries, full history and exports, and Apple Health integration. Try Premium free for 7 days with the annual plan. Terms of Service: https://peptracker.app/terms-of-service Privacy Policy: https://peptracker.app/privacy-policy MEDICAL DISCLAIMER PepTracker is for informational and tracking purposes only. It does not provide medical advice, diagnosis or treatment, and it does not calculate or recommend doses. AI features help you review and organize your own information. Supply estimates depend on the information you enter and should be independently verified. Consult a qualified healthcare professional before starting, changing or stopping any medication, peptide or treatment protocol.
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 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
Verdict
The clearest difference is monetization model: Peptide Library and Tracker at free against PepTracker's freemium. Peptide Library and Tracker also leads on iOS requirement (16.4 vs 18). PepTracker's advantage is ratings volume (469 vs 28). 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. PepTracker sells 8 in-app purchases, starting at $7.99 per month 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.
On the App Store both sit at effectively the same score — 4.7 for PepTracker against 4.8 for Peptide Library and Tracker. That said, the two scores are not equally well evidenced: PepTracker has 469 ratings behind it against 28, so its average is the more settled of the two. Written reviews are what separate them: 78% of PepTracker's written reviews are positive against 86% of Peptide Library and Tracker's.
PepTracker ships an update every 3 weeks, Peptide Library and Tracker every 11 days. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.
| Parameter | PepTracker | Peptide Library and Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (469 ratings) | 4.8 (28 ratings) — better |
| Positive reviews | 78.1% of reviews | 85.7% of reviews — better |
| Number of ratings | 469 — better | 28 |
| Update frequency | Every 3 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18 | 16.4 — better |
| Further details — not scored | ||
| Size | 20 MB | 95 MB |
| Age rating | 17+ | 17+ |
| Developer | Jayven Alan Villagomez Peredo | Superfime LLC |
Customer experience
PepTracker
Peptide Library and Tracker
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
PepTracker
- Monthly$7.991 Month
- Yearly1 Year trial$47.991 Year
- Yeary7 Days trial$47.991 Year
- Small$2.99
- Standard$6.99
- Power User$14.99
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- Premium Lifetime$79.99
- Premium Lifetime$99.00
Peptide Library and Tracker
- 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 PepTracker free?
Is Peptide Library and Tracker free?
Which has better reviews, PepTracker or Peptide Library and Tracker?
Do PepTracker or Peptide Library and Tracker have ads?
Which is updated more often, PepTracker or Peptide Library and Tracker?
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