Comparison

Peptide Library and Tracker vs PeptideBro

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

Head to head
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

About

PeptideBro

Instantly calculate precise medication dosages on a visual syringe and organize your entire treatment protocol. Log doses, track injection sites, and manage schedules with reminders, all while keeping your data private and on-device.

Highlights
  • Visual syringe dosage calculation
  • Dose logging and tracking
  • Injection site rotation map
  • Scheduled reminders
  • Biochemistry reference library
  • Progress charting (Pro)
  • Automatic iCloud backup (Pro)
Features
Read full description

Your schedule. Your entries. Your records. PeptideBro is a private tracking journal for the routine you already follow. Keep your schedule, saved entries, injection areas and vials in one place. No PeptideBro account is required. LOG EVERY ENTRY • Record compound, amount, area, time and notes in seconds • Open a prefilled entry from Today or a widget, then review before saving • Undo the entry you just saved; edit or delete past entries anytime YOUR SCHEDULE, CLEARLY ORGANIZED • Select weekdays and start/end dates, or pause your schedule • Distinguish scheduled, recorded, skipped and paused entries in Today and Calendar • Optional reminders before each scheduled time • Pro adds anchored intervals, repeating on/off periods and multiple daily times • Add the free Next entry widget to your Home or Lock Screen; Pro includes the full upcoming schedule widget AREA ROTATION • Explore detailed male or female body models with front and back views • Select an area to see its name and status from your Log • Green marks ready areas; yellow marks the last used area • Ready and Healing labels use elapsed log timing, not a clinical assessment of tissue recovery or safety VIAL INVENTORY • Record a vial's starting volume and the liquid used on each entry • The balance changes only by the volumes you type and your own corrections • Correct spills or discarded quantities without creating entries • Pro adds multiple active vials, unopened stock and entered costs HISTORY AND REFERENCE • Import CSV history with column mapping, validation and duplicate review • Preview a PeptideBro JSON merge before applying changes • Export your records in JSON or CSV for free • Browse a grouped reference library of 28 compounds FREE AND PRO Free includes logging, the area map, two Stack items, one active vial, weekday scheduling, pause/resume, a basic next-entry widget, history import and data export. Optional Pro purchases add the capabilities above plus unlimited Stack items, progress and activity views, mechanism reference notes and automatic backup to your private iCloud. Prices and eligible offers appear before purchase. Subscriptions renew automatically unless canceled; manage them in Apple account settings. A non-renewing lifetime option is available where offered. Canceling a subscription does not delete recorded data. YOUR INFORMATION Records are stored locally unless you choose iCloud backup or export. Widgets and notifications may show schedule details on your screen. No advertising or third-party tracking SDKs are included. Local deletion and iCloud backup deletion are separate controls. For adults 18+. PeptideBro records what you enter. It does not recommend or adjust amounts, prescribe schedules, diagnose, treat, or sell compounds. Many referenced compounds are not approved for human use. Reminders have limits. Make health-related decisions with a licensed clinician. Terms: https://peptidebro.app/terms.html Privacy: https://peptidebro.app/privacy.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Peptide Library and Tracker4 screens
PeptideBro4 screens

Verdict

The call

The clearest difference is monetization model: Peptide Library and Tracker at free against PeptideBro's freemium. Peptide Library and Tracker also leads on ratings volume (28 vs 3). PeptideBro's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 86%). On price, update cadence, ads and in-app purchases 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 Library and Tracker sells 3 in-app purchases, starting at $4.99 per month and PeptideBro 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

PeptideBro holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Peptide Library and Tracker has 28 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 86% of Peptide Library and Tracker's written reviews are positive against 100% of PeptideBro's.

UpkeepUpdate frequency

Peptide Library and Tracker ships an update every 11 days, PeptideBro every 2 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Peptide Library and Tracker versus PeptideBro: the parameters behind the verdict, then further details
ParameterPeptide Library and TrackerPeptideBro
PriceFreeFree
Rating4.8 (28 ratings)5.0 (3 ratings) — better
Positive reviews85.7% of reviews100.0% of reviews — better
Number of ratings28 — better3
Update frequencyEvery 11 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size95 MB11 MB
Age rating17+17+
DeveloperSuperfime LLCMaicol F Thompson

Customer experience

Peptide Library and Tracker

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

PeptideBro

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

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
3 purchases

PeptideBro

Subscriptions2
  • PeptideBro Pro Monthly$4.991 Month
  • PeptideBro Pro Yearly7 Days trial$39.991 Year
One-time1
  • PeptideBro Pro Lifetime$99.99

Questions

Is Peptide Library and Tracker free?
Peptide Library and Tracker is free to download, with in-app purchases available.
Is PeptideBro free?
PeptideBro is free to download, with in-app purchases available.
Which has better reviews, Peptide Library and Tracker or PeptideBro?
PeptideBro is rated higher. Peptide Library and Tracker averages 4.8 out of 5 from 28 ratings, while PeptideBro averages 5.0 from 3 ratings.
Do Peptide Library and Tracker or PeptideBro have ads?
Neither Peptide Library and Tracker nor PeptideBro shows ads.
Which is updated more often, Peptide Library and Tracker or PeptideBro?
Peptide Library and Tracker ships an update every 11 days, and PeptideBro every 2 weeks. Most recently, Peptide Library and Tracker was updated on November 9, 2026 and PeptideBro on October 31, 2026.

Other comparisons