# SonicKeys vs KotoKey

The clearest difference is in-app purchases: SonicKeys at none against KotoKey's 1. SonicKeys also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). On price, device support and iOS requirement there is nothing between them.

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

SonicKeys ships an update every 2 days, KotoKey weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SonicKeys | KotoKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (8 ratings)](https://appshunter.io/ios/app/kotokey-custom-keyboard/id6779455087/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 66 MB |
| Requires iOS | **17.0** | 17.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yongjun Hong](https://appshunter.io/developer/1893365538) | [Natsumi Hayakawa](https://appshunter.io/developer/6779455089) |

## What reviewers say

### SonicKeys

[App page](https://appshunter.io/ios/app/sonickeys/id6762207609)

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

**In-app purchases:** none


### KotoKey

[App page](https://appshunter.io/ios/app/kotokey-custom-keyboard/id6779455087)

Personalize your typing experience with custom themes and satisfying mechanical keyboard sounds. This utility app offers predictive suggestions and text replacements for faster input, making every keystroke feel more comfortable and unique.

**Highlights:** Mechanical keyboard sound effects, Customizable keyboard themes, Predictive text suggestions, Text replacement for phrases, Auto Shift and Smart Apostrophe, English QWERTY and Japanese input

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KotoKey Premium | $2.99 | one-time |


## Frequently asked questions

### Is SonicKeys free?

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

### Is KotoKey free?

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

### Do SonicKeys or KotoKey have ads?

KotoKey shows ads; SonicKeys does not.

### Which is updated more often, SonicKeys or KotoKey?

SonicKeys ships an update every 2 days, and KotoKey weekly. Most recently, SonicKeys was updated on October 25, 2026 and KotoKey on October 28, 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.*