# MozcCo vs KumiKey

The clearest difference is in-app purchases: KumiKey at none against MozcCo's 1. KumiKey also leads on ads (none vs shown). MozcCo's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. MozcCo sells 1 one-off in-app purchase. KumiKey asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | MozcCo | KumiKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | Every 2 days |
| Size | 61 MB | 104 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Masaru Sadahisa](https://appshunter.io/developer/6811244751) | [Ayumu Yoshie](https://appshunter.io/developer/6818364615) |

## What reviewers say

### MozcCo

[App page](https://appshunter.io/ios/app/mozcco/id6811244749)

**Features:** iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MozcCo 広告なし | $11.99 | one-time |


### KumiKey

[App page](https://appshunter.io/ios/app/kumikey/id6826911917)

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is MozcCo free?

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

### Is KumiKey free?

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

### Do MozcCo or KumiKey have ads?

MozcCo shows ads; KumiKey does not.

### Which is updated more often, MozcCo or KumiKey?

MozcCo ships an update every 2 days, and KumiKey every 2 days. Most recently, MozcCo was updated on November 10, 2026 and KumiKey on November 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.*