# Peptide Stack Tracker vs Stack

The clearest difference is iOS requirement: Stack at 18.0 against Peptide Stack Tracker's 26.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Peptide Stack Tracker sells 2 in-app purchases, starting at $5.99 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.

Peptide Stack Tracker ships an update every 11 days, Stack every 8 days. The most recent releases landed on July 2, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Peptide Stack Tracker | Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/peptide-stack-tracker/id6764719435/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 8 days** |
| Monetization | Freemium | — |
| Size | 12 MB | 136 MB |
| Requires iOS | 26.2 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [PATRYK KOWALEWSKI](https://appshunter.io/developer/1871044842) | [Amari Thomas](https://appshunter.io/developer/1868315587) |

## What reviewers say

### Peptide Stack Tracker

[App page](https://appshunter.io/ios/app/peptide-stack-tracker/id6764719435)

This app helps adults meticulously track GLP-1 and peptide protocols. Log doses, manage injection sites, monitor vial inventory, and record wellness check-ins. Stay organized without manual logs or guesswork.

**Highlights:** Log injections with details, Create custom reminder schedules, Track multiple compounds, Manage vial inventory, Monitor injection site rotation, Record weight and wellness metrics, View bio-analytics and trend charts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Pro Monthly | $5.99 | per 7 days |
| Peptide Pro Yearly | $39.99 | 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 Peptide Stack Tracker free?

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

### Is Stack free?

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

### Do Peptide Stack Tracker or Stack have ads?

Neither Peptide Stack Tracker nor Stack shows ads.

### Which is updated more often, Peptide Stack Tracker or Stack?

Peptide Stack Tracker ships an update every 11 days, and Stack every 8 days. Most recently, Peptide Stack Tracker was updated on July 2, 2026 and Stack on September 14, 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.*