# PepOS vs Ester

The clearest difference is device support: PepOS at 3 against Ester's 1. PepOS also leads on iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. PepOS sells 2 in-app purchases, starting at $9.99 per month 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 | PepOS | Ester |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pepos-peptide-tracker/id6763047593/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Freemium | — |
| Size | 29 MB | 3 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [DOHO DIGITAL, LLC](https://appshunter.io/developer/1895136742) | [Castaneda Networks LLC](https://appshunter.io/developer/1887905253) |

## What reviewers say

### PepOS

[App page](https://appshunter.io/ios/app/pepos-peptide-tracker/id6763047593)

Track peptide doses, build custom protocols, and monitor your body's response with AI insights. Integrates with Apple Health for comprehensive optimization tracking. Not medical advice.

**Highlights:** AI peptide intelligence, Protocol builder, Apple Health integration, Vial inventory tracking, Injection site rotation, Progress tracking, AI insights and reports

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PepOS Intelligence | $9.99 | per month |
| PepOS Intelligence | $59.99 | 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 PepOS free?

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

### Is Ester free?

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

### Do PepOS or Ester have ads?

Neither PepOS 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.*