# PepPedia vs Protocol

The clearest difference is update cadence: PepPedia at every 2 days against Protocol's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PepPedia sells 2 in-app purchases, starting at $6.99 per month and Protocol sells 2 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.

PepPedia ships an update every 2 days, Protocol every 2 months. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | PepPedia | Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (63 ratings)](https://appshunter.io/ios/app/peppedia/id6755275369/reviews)** | — |
| Number of ratings | **63** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 41 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [PepPedia, Inc.](https://appshunter.io/developer/1852919295) | [Kevin Marsh](https://appshunter.io/developer/1273893146) |

## What reviewers say

### PepPedia

[App page](https://appshunter.io/ios/app/peppedia/id6755275369)

An educational reference for peptide research, offering a comprehensive library of peptide profiles, personal tracking tools for notes and inventory, and helpful math calculators. Securely sync your data across devices to stay organized and informed.

**Highlights:** Peptide research library, Personal notes and logs, Inventory and expiration tracking, Personal metrics logging, Reconstitution calculator, Concentration math helper

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peppedia Pro Monthly | $6.99 | per month |
| Peppedia Pro Yearly | $19.99 | per year |


### Protocol

[App page](https://appshunter.io/ios/app/protocol-dose-and-lab-tracker/id6800878308)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual | $39.99 | per year |
| Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is PepPedia free?

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

### Is Protocol free?

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

### Do PepPedia or Protocol have ads?

Neither PepPedia nor Protocol shows ads.

### Which is updated more often, PepPedia or Protocol?

PepPedia ships an update every 2 days, and Protocol every 2 months. Most recently, PepPedia was updated on October 14, 2026 and Protocol on October 15, 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.*