# 4 vs Pep AI

The clearest difference is in-app purchases: 4 at none against Pep AI's 20. 4 also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.4). On price and device support there is nothing between them.

Both are free to download. Pep AI sells 16 in-app purchases, starting at $3.99 per 7 days. 4 asks for nothing beyond the download.

## The numbers

| Metric | 4 | Pep AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3.8K ratings)](https://appshunter.io/ios/app/pep-ai-glp-1-peptide-tracker/id6758682710/reviews)** |
| Number of ratings | — | **3.8K** |
| Positive reviews | — | 38.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 142 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [4:13 Fitness Center](https://appshunter.io/developer/1662013140) | [Zode Development LLC](https://appshunter.io/developer/1851109622) |

## What reviewers say

### 4

[App page](https://appshunter.io/ios/app/413/id6751051237)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Pep AI

[App page](https://appshunter.io/ios/app/pep-ai-glp-1-peptide-tracker/id6758682710)

This app helps you meticulously track peptide research, including inventory, logs, nutrition, wellness, and notes. It replaces scattered data with an organized, private system for consistency and offers features like injection site tracking, side effect logging, and AI-powered meal scanning.

**Highlights:** Inventory & Organization, Injection Site Tracker, Side Effects Tracking, Nutrition Logging, Meal Scanner, Apple Health Integration, Bloodwork Tracker, AI Insights

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pep Week Updated | $3.99 | per 7 days |
| Pep AI Monthly | $9.99 | per month |
| Pep Month Updated | $9.99 | per month |
| Pep AI Yearly Discount | $19.99 | per year |
| Pep AI Yearly | $19.99 | per year |
| Pep AI Yearly | $24.99 | per year |
| Pep Discount Updated | $29.99 | per year |
| Pep AI Yearly | $29.99 | per year |
| Pep AI Yearly | $29.99 | per year |
| Pep Year Updated | $29.99 | per year |
| Pep Year Updated | $34.99 | per year |
| Pep Year Updated | $39.99 | per year |
| Pep Year Updated | $39.99 | per year |
| Pep Year Updated | $44.99 | per year |
| Pep Year Subscription | $49.99 | per year |
| Pep Year Subscription | $59.99 | per year |


## Frequently asked questions

### Is 4 free?

4 is free to download, with no in-app purchases.

### Is Pep AI free?

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

### Do 4 or Pep AI have ads?

Pep AI shows ads; 4 does not.

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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.*