# Stack vs PEP Social

The clearest difference is update cadence: PEP Social at daily against Stack's every 2 weeks. PEP Social also leads on iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Stack sells 2 in-app purchases, starting at $9.99 per 7 days and PEP Social sells 5 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Stack ships an update every 2 weeks, PEP Social daily. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Stack | PEP Social |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (26 ratings)](https://appshunter.io/ios/app/pep-social-peptide-community/id6784893142/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | — | Freemium |
| Size | 106 MB | 66 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Amari Thomas](https://appshunter.io/developer/1868315587) | [PEP Social, LLC](https://appshunter.io/developer/6784893144) |

## What reviewers say

### 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 |


### PEP Social

[App page](https://appshunter.io/ios/app/pep-social-peptide-community/id6784893142)

Connect with a community focused on peptide research and experiences. Share progress, track protocols with a built-in calculator, and get AI-powered answers to your peptide-related questions. This platform is for informational and community purposes only.

**Highlights:** Community feed for peptide experiences, Track peptide protocols and doses, Reconstitution calculator, AI research assistant for peptide questions, Direct messaging with members, Trending peptides and posts

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PEP Social Premium | $4.99 | per month |
| PEP Social Premium + (Monthly) | $9.99 | per month |
| PEP Social Premium (Annual) | $29.99 | per year |
| Premium Offer | $29.99 | per year |
| PEP Social Premium + (Annual) | $59.99 | per year |


## Frequently asked questions

### Is Stack free?

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

### Is PEP Social free?

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

### Do Stack or PEP Social have ads?

Neither Stack nor PEP Social shows ads.

### Which is updated more often, Stack or PEP Social?

Stack ships an update every 2 weeks, and PEP Social daily. Most recently, Stack was updated on October 28, 2026 and PEP Social on October 24, 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.*