# PeptideJournal vs Peptide Library and Tracker

The clearest difference is price: Peptide Library and Tracker at Free against PeptideJournal's $5.99. Peptide Library and Tracker also leads on rating (4.7 vs 4.3) and review sentiment (86% vs 63%). PeptideJournal's advantage is in-app purchases (none vs 2) and chart position (#194 vs unranked). On ratings volume, update cadence, ads and device support there is nothing between them.

Peptide Library and Tracker is free to download; PeptideJournal costs $5.99 up front. Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month. PeptideJournal asks for nothing beyond the download.

Peptide Library and Tracker holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 20 and 26 respectively. Written reviews point the same way: 63% of PeptideJournal's written reviews are positive against 86% of Peptide Library and Tracker's.

PeptideJournal ships an update weekly, Peptide Library and Tracker every 10 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | PeptideJournal | Peptide Library and Tracker |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.3 (20 ratings)](https://appshunter.io/ios/app/peptidejournal/id6751492210/reviews) | **[4.7 (26 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** |
| Number of ratings | 20 | **26** |
| Positive reviews | 62.5% of reviews | **85.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Paid | **Free** |
| Best chart rank | **#194** | — |
| Size | 12 MB | 78 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Christopher Madrid](https://appshunter.io/developer/1835373775) | [Superfime LLC](https://appshunter.io/developer/1833586524) |

## What reviewers say

### PeptideJournal

[App page](https://appshunter.io/ios/app/peptidejournal/id6751492210)

**Currently charting:** #194 Top Paid · Health & Fitness (US App Store)

This app helps you precisely calculate peptide doses, manage your inventory, and track your usage history. It offers smart scheduling and detailed analytics, all while keeping your data private and secure on your device.

**Highlights:** Precision dose calculation, Reconstitution simulation, Inventory management, Dose history tracking, Usage analytics, Smart scheduling, Calendar integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Peptide Library and Tracker

[App page](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Library Pro Monthly | $4.99 | per month |
| Peptide Library Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is PeptideJournal free?

PeptideJournal costs $5.99, with no in-app purchases.

### Is Peptide Library and Tracker free?

Peptide Library and Tracker is free to download, with in-app purchases available.

### Which has better reviews, PeptideJournal or Peptide Library and Tracker?

Peptide Library and Tracker is rated higher. PeptideJournal averages 4.3 out of 5 from 20 ratings, while Peptide Library and Tracker averages 4.7 from 26 ratings.

### Do PeptideJournal or Peptide Library and Tracker have ads?

Neither PeptideJournal nor Peptide Library and Tracker shows ads.

### Which is updated more often, PeptideJournal or Peptide Library and Tracker?

PeptideJournal ships an update weekly, and Peptide Library and Tracker every 10 days. Most recently, PeptideJournal was updated on October 30, 2026 and Peptide Library and Tracker on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*