# Mo vs Knockdog

The clearest difference is update cadence: Mo at every 3 weeks against Knockdog's every 3 months. Mo also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Mo ships an update every 3 weeks, Knockdog every 3 months. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Mo | Knockdog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 76 MB | 35 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Jihoon Park](https://appshunter.io/developer/1743153226) | [eunhee gwak](https://appshunter.io/developer/1744130117) |

## What reviewers say

### Mo

[App page](https://appshunter.io/ios/app/mos/id6499312133)

**Features:** macOS Compatibility

**In-app purchases:** none


### Knockdog

[App page](https://appshunter.io/ios/app/knockdog/id6754978978)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mo free?

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

### Is Knockdog free?

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

### Do Mo or Knockdog have ads?

Neither Mo nor Knockdog shows ads.

### Which is updated more often, Mo or Knockdog?

Mo ships an update every 3 weeks, and Knockdog every 3 months. Most recently, Mo was updated on October 8, 2026 and Knockdog on October 10, 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.*