# Peptide Library and Tracker vs PepGuide

The clearest difference is review sentiment: Peptide Library and Tracker at 86% against PepGuide's 33%. Peptide Library and Tracker also leads on rating (4.7 vs 3.9) and monetization model (free vs free with in-app purchases). On price, ratings volume, update cadence and ads 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 PepGuide sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Peptide Library and Tracker holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 25 and 14 respectively. Written reviews point the same way: 86% of Peptide Library and Tracker's written reviews are positive against 33% of PepGuide's.

Peptide Library and Tracker ships an update every 10 days, PepGuide every 3 weeks. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Peptide Library and Tracker | PepGuide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (25 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** | [3.9 (14 ratings)](https://appshunter.io/ios/app/pepguide-peptide-tracker/id6755457021/reviews) |
| Number of ratings | **25** | 14 |
| Positive reviews | **85.7% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 78 MB | 28 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Superfime LLC](https://appshunter.io/developer/1833586524) | [GOAT STEW LLC](https://appshunter.io/developer/1854036252) |

## 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 |


### PepGuide

[App page](https://appshunter.io/ios/app/pepguide-peptide-tracker/id6755457021)

This app helps you build effective supplement stacks tailored to your health goals. It provides evidence-based insights into supplement interactions, compatibility, and community-driven trends. Optimize your wellness journey with clear, research-backed guidance.

**Highlights:** Goal-based supplement recommendations, Supplement interaction analysis, Stack compatibility insights, Community stack comparisons, Evidence-informed supplement profiles, Customizable supplement stacking

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $4.99 | per 7 days |
| Monthly Access | $14.99 | per month |
| Unlock PepGuide Premium | $14.99 | per month |
| Yearly Offer — 80% Off | $19.99 | per year |
| Yearly Access | $99.99 | 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 PepGuide free?

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

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

Peptide Library and Tracker is rated higher. Peptide Library and Tracker averages 4.7 out of 5 from 25 ratings, while PepGuide averages 3.9 from 14 ratings.

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

Neither Peptide Library and Tracker nor PepGuide shows ads.

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

Peptide Library and Tracker ships an update every 10 days, and PepGuide every 3 weeks. Most recently, Peptide Library and Tracker was updated on October 16, 2026 and PepGuide on October 6, 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.*