Comparison

Peptide Log 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 Log

Manage your peptide treatment plan with this app. Track injections, monitor progress, manage inventory, and visualize your treatment with advanced features. It offers a free trial before requiring a subscription.

Highlights
  • Multi-phase protocol tracking
  • Custom peptide blend creation
  • Full inventory management
  • Consumables tracking with alerts
  • Pharmacokinetic concentration curves
  • Injection site rotation
  • Progress photo tracking
Features
Read full description

Stay on track with your prescribed peptide treatment plan with Peptide Log, a comprehensive tracking solution for managing injections, monitoring progress, and tracking inventory. A subscription is required for access after the 7 day commitment free trial. IMPORTANT: This app is for personal tracking purposes ONLY. It does not provide medical advice. Always consult your healthcare provider regarding your treatment plan. - Advanced multi-phase protocols with automatic titration, maintenance, and tapering - Create custom peptide blends with personalized ratios - Full inventory management: vials, pens, pill bottles, batches, expiry dates, and remaining volumes - Track consumables: syringes, pen needles, alcohol swabs, and diluents with low-stock alerts - Interactive home screen widgets showing doses and live concentration charts - Pharmacokinetic concentration curves visualizing peptide levels over time - Track multiple people with separate profiles sharing the same inventory - Procurement tracking: orders, vendors, tracking numbers, and delivery status - Support for injectable, oral, and nasal dosing routes - Smart injection site rotation with color-coded safety indicators - Log side effects with severity tracking and injection correlations - Capture progress photos and track your visual transformation - Flexible cyclical dosing with customizable on/off periods - Sync weight with Apple Health and back up securely with iCloud Made with love in Bavaria Privacy Policy: https://gist.github.com/Johannes-ece/f1fc243016da98c1ee977145755f0f29 Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Peptide Log4 screens
Peptide Library and Tracker4 screens

Verdict

The call

The clearest difference is rating: Peptide Library and Tracker at 4.7 against Peptide Log's 4.0. Peptide Library and Tracker also leads on monetization model (free vs subscription) and review sentiment (86% vs 75%). On price, ratings volume, 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 Log sells 2 in-app purchases, starting at $8.99 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

Peptide Library and Tracker holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 37 and 25 respectively. Written reviews point the same way: 75% of Peptide Log's written reviews are positive against 86% of Peptide Library and Tracker's.

UpkeepUpdate frequency

Peptide Log ships an update every 8 days, Peptide Library and Tracker every 10 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Peptide Log versus Peptide Library and Tracker: the parameters behind the verdict, then further details
ParameterPeptide LogPeptide Library and Tracker
PriceFreeFree
Rating4.0 (37 ratings)4.7 (25 ratings) — better
Positive reviews75.0% of reviews85.7% of reviews — better
Number of ratings37 — better25
Update frequencyEvery 8 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.616.4 — better
Further details — not scored
Size60 MB78 MB
Age rating17+17+
DeveloperJohannes von GrundherrSuperfime LLC

Customer experience

Peptide Log

All ratings34 ratings
Positive82.4%
Neutral2.9%
Negative14.7%
Written reviews20 reviews
Positive75.0%
Neutral5.0%
Negative20.0%

Peptide Library and Tracker

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

In-app purchases

2 purchases

Peptide Log

Subscriptions2
  • Peptide Log Monthly$8.991 Month
  • Peptide Log Yearly$39.991 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 Peptide Log free?
Peptide Log 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 Log or Peptide Library and Tracker?
Peptide Library and Tracker is rated higher. Peptide Log averages 4.0 out of 5 from 37 ratings, while Peptide Library and Tracker averages 4.7 from 25 ratings.
Do Peptide Log or Peptide Library and Tracker have ads?
Neither Peptide Log nor Peptide Library and Tracker shows ads.
Which is updated more often, Peptide Log or Peptide Library and Tracker?
Peptide Log ships an update every 8 days, and Peptide Library and Tracker every 10 days. Most recently, Peptide Log was updated on October 22, 2026 and Peptide Library and Tracker on October 24, 2026.

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