# Protocol vs LetoCare

The clearest difference is in-app purchases: LetoCare at none against Protocol's 2. Protocol's advantage is update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Protocol sells 2 in-app purchases, starting at $1.99 per 7 days. LetoCare asks for nothing beyond the download.

Protocol ships an update every 2 days, LetoCare every 5 days. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Protocol | LetoCare |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protocol-peptides/id6764390731/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | Free | — |
| Size | 47 MB | 16 MB |
| Requires iOS | **17.5** | 18.2 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Alexandre Masmejean](https://appshunter.io/developer/1895978437) | [Maxime Gerardin](https://appshunter.io/developer/1896620922) |

## What reviewers say

### 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 |


### LetoCare

[App page](https://appshunter.io/ios/app/letocare/id6768984220)

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

**In-app purchases:** none


## Frequently asked questions

### Is Protocol free?

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

### Is LetoCare free?

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

### Do Protocol or LetoCare have ads?

Neither Protocol nor LetoCare shows ads.

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

Protocol ships an update every 2 days, and LetoCare every 5 days. Most recently, Protocol was updated on October 2, 2026 and LetoCare on October 3, 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.*