# Peptide AI vs Protocol

The clearest difference is rating: Protocol at 5.0 against Peptide AI's 4.5. Protocol also leads on monetization model (free vs freemium) and update cadence (every 2 days vs weekly). Peptide AI's advantage is ratings volume (76 vs 1) and device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Peptide AI sells 4 in-app purchases, starting at $6.99 per 7 days and Protocol sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Protocol holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Peptide AI has 76 ratings behind it against 1, so its average is the more settled of the two.

Peptide AI ships an update weekly, Protocol every 2 days. The most recent releases landed on November 13, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Peptide AI | Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (76 ratings)](https://appshunter.io/ios/app/peptide-ai-reta-glp-1-tracker/id6760374374/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protocol-peptides/id6764390731/reviews)** |
| Number of ratings | **76** | 1 |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Freemium | **Free** |
| Size | 74 MB | 47 MB |
| Requires iOS | 18.0 | **17.5** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Peptide AI](https://appshunter.io/developer/1884181684) | [Alexandre Masmejean](https://appshunter.io/developer/1895978437) |

## What reviewers say

### Peptide AI

[App page](https://appshunter.io/ios/app/peptide-ai-reta-glp-1-tracker/id6760374374)

Log peptide and GLP-1 doses with an AI coach that analyzes your data. Track vial levels, rotate injection sites, and monitor side effects. Connect wearables for comprehensive health insights.

**Highlights:** AI coach for data analysis, Two-tap dose logging, Injection site rotation map, Vial and pen level tracking, Integration with wearables, Community rooms and leaderboards, PDF export of health data

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $6.99 | per 7 days |
| Premium Monthly | $14.99 | per month |
| Premium Yearly Offer | $29.99 | per year |
| Premium Yearly | $59.99 | per year |


### Protocol

[App page](https://appshunter.io/ios/app/protocol-peptides/id6764390731)

This app helps users meticulously track peptide cycles, logging each injection with customizable details. It provides comprehensive guides on reconstitution, injection techniques, and safety, alongside personalized reminders and progress tracking.

**Highlights:** Log peptide injections with customizable details, Curated library of 25+ compounds, Add custom compounds and edit entries, Streak counter and dose history, Per-peptide reminders with native iOS notifications, Built-in safety and how-to guides, Personalized onboarding based on goals and experience

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protocol Pro | $1.99 | per 7 days |
| Protocol Pro | $39.99 | per year |


## Frequently asked questions

### Is Peptide AI free?

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

### Is Protocol free?

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

### Which has better reviews, Peptide AI or Protocol?

Protocol is rated higher. Peptide AI averages 4.5 out of 5 from 76 ratings, while Protocol averages 5.0 from 1 ratings.

### Do Peptide AI or Protocol have ads?

Neither Peptide AI nor Protocol shows ads.

### Which is updated more often, Peptide AI or Protocol?

Peptide AI ships an update weekly, and Protocol every 2 days. Most recently, Peptide AI was updated on November 13, 2026 and Protocol on November 5, 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.*