# Pep AI vs PepStack

The clearest difference is ads: PepStack at none against Pep AI's shown. PepStack also leads on update cadence (every 2 days vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Pep AI sells 15 in-app purchases, starting at $3.99 per 7 days and PepStack sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Pep AI ships an update weekly, PepStack every 2 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Pep AI | PepStack |
| --- | --- | --- |
| 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 | 37.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 142 MB | 85 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Zode Development LLC](https://appshunter.io/developer/1851109622) | [Max Berktold](https://appshunter.io/developer/1596273015) |

## What reviewers say

### 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 (15)**

| 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 |


### PepStack

[App page](https://appshunter.io/ios/app/pepstack-biohacking-tracker/id6760306960)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PepStack Premium (Monthly) | $2.99 | per month |
| PepStack Premium (Yearly) | $22.99 | per year |


## Frequently asked questions

### Is Pep AI free?

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

### Is PepStack free?

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

### Do Pep AI or PepStack have ads?

Pep AI shows ads; PepStack does not.

### Which is updated more often, Pep AI or PepStack?

Pep AI ships an update weekly, and PepStack every 2 days. Most recently, Pep AI was updated on October 15, 2026 and PepStack on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*