# Pep AI vs Biostacks

The clearest difference is review sentiment: Pep AI at 36% against Biostacks's 0%. Pep AI also leads on update cadence (every 6 days vs every 2 weeks). Biostacks's advantage is ads (none vs shown). On price, in-app purchases, monetization model 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 and Biostacks sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Pep AI ships an update every 6 days, Biostacks every 2 weeks. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Pep AI | Biostacks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4K ratings)](https://appshunter.io/ios/app/pep-ai-glp-1-tracker-app/id6758682710/reviews)** | — |
| Number of ratings | **4K** | — |
| Positive reviews | **35.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 135 MB | 68 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Zode Development LLC](https://appshunter.io/developer/1851109622) | [Hmujo LLC](https://appshunter.io/developer/1895266544) |

## What reviewers say

### Pep AI

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


### Biostacks

[App page](https://appshunter.io/ios/app/biostacks-supplement-tracker/id6763328808)

Easily manage your supplement intake with barcode scanning, AI assistance, and detailed insights. Track routines, monitor nutrient coverage, and analyze your stack's effectiveness and cost. Prioritizes user privacy with offline functionality and optional iCloud sync.

**Highlights:** Barcode scanning for supplement library, AI-powered supplement routine analysis, Customizable daily and cycle schedules, StackScore for routine quality, Potential interaction warnings, RDA coverage and nutrient overlap analysis, Mood, energy, and sleep trend tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biostacks Pro - Monthly | $3.99 | per month |
| Biostacks Pro - Annual | $24.99 | per year |


## Frequently asked questions

### Is Pep AI free?

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

### Is Biostacks free?

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

### Do Pep AI or Biostacks have ads?

Pep AI shows ads; Biostacks does not.

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

Pep AI ships an update every 6 days, and Biostacks every 2 weeks. Most recently, Pep AI was updated on October 31, 2026 and Biostacks on October 24, 2026.

---

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