# Compound vs Polypep

The clearest difference is update cadence: Polypep at every 2 days against Compound's weekly. Compound's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Compound ships an update weekly, Polypep every 2 days. The most recent releases landed on September 5, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Compound | Polypep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Size | 74 MB | 59 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Duffle Wallet LLC](https://appshunter.io/developer/1843934113) | [Dal Rupnik](https://appshunter.io/developer/631308099) |

## What reviewers say

### Compound

[App page](https://appshunter.io/ios/app/compound-peptide-tracker/id6759011612)

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

**In-app purchases:** none


### Polypep

[App page](https://appshunter.io/ios/app/polypep/id6768591859)

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

**In-app purchases:** none


## Frequently asked questions

### Is Compound free?

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

### Is Polypep free?

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

### Do Compound or Polypep have ads?

Neither Compound nor Polypep shows ads.

### Which is updated more often, Compound or Polypep?

Compound ships an update weekly, and Polypep every 2 days. Most recently, Compound was updated on September 5, 2026 and Polypep on September 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.*