# MAX Peptide AI vs Stack

The clearest difference is ads: Stack at none against MAX Peptide AI's shown. MAX Peptide AI's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (16.4 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. MAX Peptide AI sells 5 in-app purchases, starting at $7.99 per 7 days and Stack sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

MAX Peptide AI ships an update every 4 days, Stack every 2 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | MAX Peptide AI | Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (18 ratings)](https://appshunter.io/ios/app/max-peptide-ai-glp-1-tracker/id6762551449/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 117 MB | 106 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Rugile Mameniskyte](https://appshunter.io/developer/1894650675) | [Amari Thomas](https://appshunter.io/developer/1868315587) |

## What reviewers say

### MAX Peptide AI

[App page](https://appshunter.io/ios/app/max-peptide-ai-glp-1-tracker/id6762551449)

This AI-powered app helps users meticulously track GLP-1 and peptide protocols. It offers AI body scans, progress monitoring, precise dosage scheduling, and insights from lab results to optimize health and fitness goals.

**Highlights:** AI Body Scan & Progress Tracking, GLP-1 & Peptide Dosage Schedule, Build & Optimize Peptide Protocols, Log Doses & Side Effects, Track Peptide-to-Fitness Impact, Lab Result Analysis with AI Insights, AI Research Engine

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MAX Peptide AI Pro - Weekly | $7.99 | per 7 days |
| MAX Peptide AI Pro - Monthly | $12.99 | per month |
| MAX Peptide AI Pro - Yearly | $29.99 | per year |
| MAX Peptide AI Pro - Yearly | $49.99 | per year |
| MAX Peptide AI Pro - Yearly | $49.99 | per year |


### Stack

[App page](https://appshunter.io/ios/app/stack-peptide-tracker/id6773488687)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Weekly | $9.99 | per 7 days |
| Stack Yearly | $49.99 | per year |


## Frequently asked questions

### Is MAX Peptide AI free?

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

### Is Stack free?

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

### Do MAX Peptide AI or Stack have ads?

MAX Peptide AI shows ads; Stack does not.

### Which is updated more often, MAX Peptide AI or Stack?

MAX Peptide AI ships an update every 4 days, and Stack every 2 weeks. Most recently, MAX Peptide AI was updated on November 5, 2026 and Stack on November 10, 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.*