# Peptify vs Peptide Library

The clearest difference is device support: Peptify at 3 against Peptide Library's 1. Peptify also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Peptify ships an update every 8 days, Peptide Library every 5 days. The most recent releases landed on October 31, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Peptify | Peptide Library |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 5 days** |
| Size | 45 MB | 16 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [DANIEL VILLAREAL](https://appshunter.io/developer/6803502983) | [Jay Park](https://appshunter.io/developer/6808156571) |

## What reviewers say

### Peptify

[App page](https://appshunter.io/ios/app/peptify-peptide-database/id6803536059)

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

**In-app purchases:** none


### Peptide Library

[App page](https://appshunter.io/ios/app/peptide-library/id6808156569)

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

**In-app purchases:** none


## Frequently asked questions

### Is Peptify free?

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

### Is Peptide Library free?

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

### Do Peptify or Peptide Library have ads?

Neither Peptify nor Peptide Library shows ads.

### Which is updated more often, Peptify or Peptide Library?

Peptify ships an update every 8 days, and Peptide Library every 5 days. Most recently, Peptify was updated on October 31, 2026 and Peptide Library on October 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.*