# SkinStack AI vs Pepwise

The clearest difference is in-app purchases: Pepwise at none against SkinStack AI's 2. Pepwise also leads on ads (none vs shown). SkinStack AI's advantage is iOS requirement (15.1 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. SkinStack AI sells 2 in-app purchases, starting at $5.99 per month. Pepwise asks for nothing beyond the download.

SkinStack AI ships an update weekly, Pepwise every 9 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SkinStack AI | Pepwise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/pepwise/id6790192330/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | — | Free |
| Size | 37 MB | 14 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Jody Ryan van Schalkwyk](https://appshunter.io/developer/1896589331) | [Wellness Research Supply, LLC](https://appshunter.io/developer/6790192332) |

## What reviewers say

### SkinStack AI

[App page](https://appshunter.io/ios/app/skinstack-ai/id6768606391)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SkinStack Premium Monthly | $5.99 | per month |
| SkinStack Premium Annual | $39.99 | per year |


### Pepwise

[App page](https://appshunter.io/ios/app/pepwise/id6790192330)

This app helps researchers organize peptide protocols, perform calculations, manage inventory, and track observations. It offers features for planning research schedules, calculating amounts, and monitoring vial usage. Data is stored privately and can sync via iCloud, with optional integration with Apple Health.

**Highlights:** Organize peptide protocols with schedules, Built-in reconstitution and amount calculators, Track vial inventory and log usage, Review research history and weight trends, Optional Apple Health integration, Private data storage and iCloud sync

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

**In-app purchases:** none


## Frequently asked questions

### Is SkinStack AI free?

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

### Is Pepwise free?

Pepwise is free to download, with no in-app purchases.

### Do SkinStack AI or Pepwise have ads?

SkinStack AI shows ads; Pepwise does not.

### Which is updated more often, SkinStack AI or Pepwise?

SkinStack AI ships an update weekly, and Pepwise every 9 days. Most recently, SkinStack AI was updated on October 11, 2026 and Pepwise on October 7, 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.*