# Katana.run vs Meraki Diary

The clearest difference is in-app purchases: Katana.run at none against Meraki Diary's 1. Katana.run also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). Meraki Diary's advantage is update cadence (every 6 months vs every 33 months). On price and ads there is nothing between them.

Both are free to download. Meraki Diary sells 1 one-off in-app purchase. Katana.run asks for nothing beyond the download.

Katana.run ships an update every 33 months, Meraki Diary every 6 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Katana.run | Meraki Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 6 months** |
| Size | 53 MB | 187 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Bits Kingdom LLC](https://appshunter.io/developer/1206516876) | [晨波 张](https://appshunter.io/developer/1791111951) |

## What reviewers say

### Katana.run

[App page](https://appshunter.io/ios/app/katanarun/id6446367533)

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

**In-app purchases:** none


### Meraki Diary

[App page](https://appshunter.io/ios/app/meraki-diary/id6743073556)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Meraki PRO | $2.99 | one-time |


## Frequently asked questions

### Is Katana.run free?

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

### Is Meraki Diary free?

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

### Do Katana.run or Meraki Diary have ads?

Neither Katana.run nor Meraki Diary shows ads.

### Which is updated more often, Katana.run or Meraki Diary?

Katana.run ships an update every 33 months, and Meraki Diary every 6 months. Most recently, Katana.run was updated on October 25, 2026 and Meraki Diary on October 24, 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.*