# Kert'App vs Peptide Journal

The clearest difference is ads: Kert'App at none against Peptide Journal's shown. Kert'App also leads on iOS requirement (15.0 vs 17.0). Peptide Journal's advantage is update cadence (every 2 days vs every 2 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Kert'App sells 6 in-app purchases, starting at $2.99 per month and Peptide Journal sells 1 in-app purchase, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Kert'App ships an update every 2 months, Peptide Journal every 2 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Kert'App | Peptide Journal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 26 MB | 48 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexandre COLOMBEL](https://appshunter.io/developer/1815044530) | [Samir MEDANI](https://appshunter.io/developer/1891389001) |

## What reviewers say

### Kert'App

[App page](https://appshunter.io/ios/app/kertapp/id6746075630)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Gold Monthly | $3.99 | per month |
| Ultimate Monthly | $7.99 | per month |
| Premium Annually | $22.99 | per year |
| Gold Annually | $44.99 | per year |
| Ultimate Annual | $79.99 | per year |


### Peptide Journal

[App page](https://appshunter.io/ios/app/peptide-journal-dose-tracker/id6807552056)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Journal Monthly | $8.99 | per month |


## Frequently asked questions

### Is Kert'App free?

Kert'App is free to download, with in-app purchases available.

### Is Peptide Journal free?

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

### Do Kert'App or Peptide Journal have ads?

Peptide Journal shows ads; Kert'App does not.

### Which is updated more often, Kert'App or Peptide Journal?

Kert'App ships an update every 2 months, and Peptide Journal every 2 days. Most recently, Kert'App was updated on October 7, 2026 and Peptide Journal on October 9, 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.*