# Protocol vs Ester

Protocol and Ester are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Protocol sells 2 in-app purchases, starting at $1.99 per 7 days and Ester sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Protocol | Ester |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free | — |
| Size | 47 MB | 3 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Alexandre Masmejean](https://appshunter.io/developer/1895978437) | [Castaneda Networks LLC](https://appshunter.io/developer/1887905253) |

## 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 |


### Ester

[App page](https://appshunter.io/ios/app/ester-dose-and-lab-tracker/id6778684239)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ester Pro | $4.99 | per month |
| Ester Pro | $29.99 | per year |


## Frequently asked questions

### Is Protocol free?

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

### Is Ester free?

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

### Do Protocol or Ester have ads?

Neither Protocol nor Ester shows ads.

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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.*