# PepTracker vs Peptide Library and Tracker

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.

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.

## The numbers

| Metric | PepTracker | Peptide Library and Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (469 ratings)](https://appshunter.io/ios/app/peptracker-peptide-tracker/id6747189889/reviews) | **[4.8 (28 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** |
| Number of ratings | **469** | 28 |
| Positive reviews | 78.1% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | Freemium | **Free** |
| Size | 20 MB | 95 MB |
| Requires iOS | 18 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [Jayven Alan Villagomez Peredo](https://appshunter.io/developer/1820200864) | [Superfime LLC](https://appshunter.io/developer/1833586524) |

## What reviewers say

### PepTracker

[App page](https://appshunter.io/ios/app/peptracker-peptide-tracker/id6747189889)

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.

**Highlights:** Log injection doses, Build peptide/GLP-1 protocols, Built-in dose calculator, Schedule reminders, Track progress metrics, Export logs

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $7.99 | per month |
| Yearly | $47.99 | per year |
| Yeary | $47.99 | per year |
| Small | $2.99 | one-time |
| Standard | $6.99 | one-time |
| Power User | $14.99 | one-time |
| Premium Lifetime | $79.99 | one-time |
| Premium Lifetime | $99.00 | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use
- 🚀 Powerful dose calculator
- 📊 Helpful for tracking weight loss goals
- ⏰ Useful reminders for injections
- 🗂️ Organizes multiple protocols

**What reviewers complain about**

- ⚠️ Only allows mcg dosage and calculations

**Reported bugs**

- Units function not working

**Requested features**

- Support for more units of measurement
- Ability to track more than 2 protocols


### 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 (3)**

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


## Frequently asked questions

### Is PepTracker free?

PepTracker 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, PepTracker or Peptide Library and Tracker?

Peptide Library and Tracker is rated higher. PepTracker averages 4.7 out of 5 from 469 ratings, while Peptide Library and Tracker averages 4.8 from 28 ratings.

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

Neither PepTracker nor Peptide Library and Tracker shows ads.

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

PepTracker ships an update every 3 weeks, and Peptide Library and Tracker every 11 days. Most recently, PepTracker was updated on November 5, 2026 and Peptide Library and Tracker on November 9, 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.*