# Peptide AI vs Protocol

The clearest difference is monetization model: Protocol at free against Peptide AI's subscription. Protocol also leads on update cadence (every 2 days vs weekly) and rating (5.0 vs 4.8). Peptide AI's advantage is ratings volume (26 vs 1) and iOS requirement (15.1 vs 17.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Peptide AI sells 2 in-app purchases, starting at $14.99 per month 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 4.8. That said, the two scores are not equally well evidenced: Peptide AI has 26 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 October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Peptide AI | Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (26 ratings)](https://appshunter.io/ios/app/peptide-ai-peptide-tracker/id6760367577/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protocol-peptides/id6764390731/reviews)** |
| Number of ratings | **26** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Subscription | **Free** |
| Size | 88 MB | 47 MB |
| Requires iOS | **15.1** | 17.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Incubator LLC](https://appshunter.io/developer/1884135483) | [Alexandre Masmejean](https://appshunter.io/developer/1895978437) |

## What reviewers say

### Peptide AI

[App page](https://appshunter.io/ios/app/peptide-ai-peptide-tracker/id6760367577)

Track peptide injections, doses, weight, and side effects with this comprehensive tool. It supports popular GLP-1 medications and integrates with Apple Health for a holistic view of your progress. This app is an organizational aid, not a source of medical advice.

**Highlights:** Track injections and doses, Log weight and side effects, Monitor progress trends, Manage reminders, Integrate with Apple Health, Support for GLP-1 medications

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide AI Pro Monthly | $14.99 | per month |
| Peptide AI Pro Yearly | $54.99 | 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 4.8 out of 5 from 26 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 October 6, 2026 and Protocol on October 2, 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.*