# Peptide Library and Tracker vs Peptide Stack

The clearest difference is ads: Peptide Library and Tracker at none against Peptide Stack's shown. Peptide Library and Tracker also leads on rating (4.6 vs 4.2) and monetization model (free vs free with in-app purchases). Peptide Stack's advantage is update cadence (daily vs every 10 days). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month and Peptide Stack sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Peptide Library and Tracker holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 20 and 5 respectively. Written reviews point the same way: 83% of Peptide Library and Tracker's written reviews are positive against 67% of Peptide Stack's.

Peptide Library and Tracker ships an update every 10 days, Peptide Stack daily. The most recent releases landed on September 12, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Peptide Library and Tracker | Peptide Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (20 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/peptide-stack-glp-1-tracker/id6759533641/reviews) |
| Number of ratings | **20** | 5 |
| Positive reviews | **83.3% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 58 MB | 13 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Superfime LLC](https://appshunter.io/developer/1833586524) | [Brandon King](https://appshunter.io/developer/1879265719) |

## What reviewers say

### 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 |


### Peptide Stack

[App page](https://appshunter.io/ios/app/peptide-stack-glp-1-tracker/id6759533641)

Track your GLP-1 medication doses and monitor your weight progress. This app supports various peptide medications and custom stacks, helping you manage your health journey.

**Highlights:** GLP-1 medication tracking, Weight progress monitoring, Custom peptide stack support, Dose logging, Subscription management

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $9.99 | per month |
| Annual Plan | $49.99 | per year |


## Frequently asked questions

### Is Peptide Library and Tracker free?

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

### Is Peptide Stack free?

Peptide Stack is free to download, with in-app purchases available.

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

Peptide Library and Tracker is rated higher. Peptide Library and Tracker averages 4.6 out of 5 from 20 ratings, while Peptide Stack averages 4.2 from 5 ratings.

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

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

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

Peptide Library and Tracker ships an update every 10 days, and Peptide Stack daily. Most recently, Peptide Library and Tracker was updated on September 12, 2026 and Peptide Stack on September 15, 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.*