# Peptide Tracker vs Peptide Library and Tracker

Peptide Tracker and Peptide Library and Tracker both sit at 4.5 stars, but that hides the real split: 83% of Peptide Library and Tracker's written reviews are positive against 40% of Peptide Tracker's. Peptide Library and Tracker also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Peptide Tracker sells 8 in-app purchases, starting at $7.99 per 7 days 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.

On the App Store both sit at effectively the same score — 4.5 for Peptide Tracker against 4.6 for Peptide Library and Tracker. Both are backed by a comparable volume of ratings — 42 and 20 respectively. Written reviews are what separate them: 40% of Peptide Tracker's written reviews are positive against 83% of Peptide Library and Tracker's.

Peptide Tracker ships an update weekly, Peptide Library and Tracker every 10 days. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Peptide Tracker | Peptide Library and Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (42 ratings)](https://appshunter.io/ios/app/peptide-tracker-pepsync/id6754186869/reviews) | **[4.6 (20 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** |
| Number of ratings | **42** | 20 |
| Positive reviews | 40.0% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 38 MB | 58 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Thomas Strathern](https://appshunter.io/developer/1785242207) | [Superfime LLC](https://appshunter.io/developer/1833586524) |

## What reviewers say

### Peptide Tracker

[App page](https://appshunter.io/ios/app/peptide-tracker-pepsync/id6754186869)

This app simplifies peptide use by calculating accurate dosages, tracking injections, and setting reminders for consistency. Manage multiple peptides and review your history with a clear and reliable interface.

**Highlights:** Smart peptide calculator for accurate dosing, Log and track peptide injections, Set reminders for consistency, Review injection and dosage history, Manage multiple peptides, Designed for clarity and reliability

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $7.99 | per 7 days |
| Premium Weekly | $7.99 | per 7 days |
| PepSync Weekly | $7.99 | per 7 days |
| Premium Yearly | $59.99 | per year |
| Premium Annual | $59.99 | per year |
| Premium Annual - 3 Day Trial | $59.99 | per year |
| Premium Annual - 30 Day Trial | $59.99 | per year |
| Premium Lifetime | $59.99 | one-time |


### 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 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 4.5 out of 5 from 42 ratings, while Peptide Library and Tracker averages 4.6 from 20 ratings.

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

Peptide Tracker shows ads; Peptide Library and Tracker does not.

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

Peptide Tracker ships an update weekly, and Peptide Library and Tracker every 10 days. Most recently, Peptide Tracker was updated on September 23, 2026 and Peptide Library and Tracker on September 12, 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.*