# Kaizen OS vs Emicool

The clearest difference is ads: Emicool at none against Kaizen OS's shown. Kaizen OS's advantage is iOS requirement (11.0 vs 15.0). On price, update cadence, 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.

Kaizen OS ships an update every 8 months, Emicool every 5 months. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Kaizen OS | Emicool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 5 months** |
| Size | 10 MB | 3 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Tech Solutions International Limited](https://appshunter.io/developer/1501469046) | [Emicool](https://appshunter.io/developer/849152001) |

## What reviewers say

### Kaizen OS

[App page](https://appshunter.io/ios/app/kaizen-os/id1472730056)

**Features:** macOS Compatibility

**In-app purchases:** none


### Emicool

[App page](https://appshunter.io/ios/app/emicool/id6743155335)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kaizen OS free?

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

### Is Emicool free?

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

### Do Kaizen OS or Emicool have ads?

Kaizen OS shows ads; Emicool does not.

### Which is updated more often, Kaizen OS or Emicool?

Kaizen OS ships an update every 8 months, and Emicool every 5 months. Most recently, Kaizen OS was updated on September 24, 2026 and Emicool on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*