# KeyBoy – AI Translate Keyboard — Learn English, Korean, Chinese

> AI-powered keyboard for real-time language translation and learning. (iPhone/iPad app by Yuta Kuchiba.)

- Source: https://appshunter.io/ios/app/keyboy-ai-translate-keyboard/id6748154672 (this page in markdown: same URL + `.md`)
- Developer: [Yuta Kuchiba](https://appshunter.io/developer/1693791672)
- Category: Reference, Education
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 18.0 · 112 MB
- Languages: American English, Japanese
- Released: 2025-07-22
- Data updated: 2026-08-13
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/keyboy-ai-translate-keyboard/id6748154672/reviews.md

## What is KeyBoy?

Turn your daily typing into language learning.

With KeyBoy, simply replace your iOS keyboard and every sentence you type is instantly translated into English, Korean, Chinese, and more.
Don’t know a word? Just tap once to see the meaning. Whether you’re chatting, scrolling social media, writing emails, or searching maps, you’ll be building your language skills naturally—while using the apps you already love.

Key Features
- Real-time translation: Instantly convert Japanese into foreign languages as you type.
- Professional translations: Choose from casual, formal, British English, and more.
- Dictionary pop-up: Check word meanings on the spot.
- Insert translated text: Chat smoothly in foreign languages.
- Privacy-first: Your input data is only used for translation, nothing else.
- Free plan: Unlimited access to fast direct translations.
- Premium plan: Near-unlimited access to professional translations.

With KeyBoy, every app becomes a practical language lesson.
Start your own “Keyboard Study Abroad” today.

## Key features

- Real-time translation
- Professional translation options
- Instant dictionary lookup
- Insert translated text
- Privacy-focused input handling
- Free and premium plans

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Premium | $19.99 | per month |


## Recent user reviews (10 of 13)

All indexed reviews: https://appshunter.io/ios/app/keyboy-ai-translate-keyboard/id6748154672/reviews.md

### 5/5 — 素晴らしいキーボード

*2026-04-07*

とても勉強になる！キーボードの振動が設定出来るようになるとうれしいです！

### 5/5 — SNSマーケのお仕事での活用

*2026-01-19*

中国のSNS「RED」でこれから日本にくるトレンド情報をリサーチする際に、RED内検索でめちゃくちゃ便利です！！例えば日本語で「ヘアケア」と打つだけで中国語に変換してくれるので、今の中国のヘアケアトレンドを翻訳無しで探すことができます！時短になり助かっております！！

### 3/5 — 課金したい

*2025-10-28*

買い切りタイプの課金方法に変更していただきたいです😭

### 5/5 — すばらしい

*2025-10-09*

非常に豊かな言語学習。yuta kuchibaは常に驚きを与えてくれます。

### 5/5 — 毎日英語の表現がチラ見できるのがいい

*2025-08-15*

LINEしてるときにこのアプリを使うようにしているが自分の言葉が英語でいうとどうなるのかキーボードの上部に出てきて勉強している気分になる^ - ^

### 5/5 — いいアプリ

*2025-08-11*

ちょうどこんなアプリを探してた、他にいろんな機能があるキーボードアプリがあるけどこれは勉強に特化してるのがいい

### 5/5 — 画期的！

*2025-08-06*

多くの時間をフリック入力に捧げている今、ついでに英語も学べるなんてビックリ！みんなにおすすめしたいアプリです！

### 5/5 — 旅行でめちゃめちゃ役に立った

*2025-07-29*

中国に旅行に行ったとき、中国の地図アプリや決済アプリなど、中国語で検索する必要があった。普通はアプリをまたいで翻訳してからコピペしないといけないところ、これはそのアプリ内ですぐに使えて便利すぎた。他の言語でも対応してくれるともっと嬉しい！

### 5/5 — 完璧

*2025-07-29*

すごいです。便利です。留学前にぴったりですね。英語学ばずに済んでしまいそう。。笑

### 5/5 — 今までなかったアプリ

*2025-07-26*

英語で送らないといけないチャットで重宝してます

## Frequently asked questions about KeyBoy

### What languages does KeyBoy translate?

KeyBoy offers real-time translation into English, Korean, Chinese, and more. The app allows users to convert text from Japanese into these foreign languages as they type.

### Does KeyBoy have ads?

No, KeyBoy is ad-free. The application does not contain advertisements, allowing for an uninterrupted user experience.

### What are the subscription options for KeyBoy?

KeyBoy offers a Monthly Premium subscription for $19.99 per month, providing near-unlimited access to professional translations. A free plan is also available with unlimited access to fast direct translations.

### Is KeyBoy available on Android?

Based on the provided information, KeyBoy is currently supported on iPhone and iPad devices. Compatibility with Android is not specified.

### How does KeyBoy protect user privacy?

KeyBoy prioritizes privacy by ensuring that your input data is solely used for translation purposes and nothing else. Your typing activity is not stored or used for other means.

### What is the age rating for KeyBoy?

KeyBoy has an age rating of 17+, indicating it may contain content suitable for mature users. This is often related to the complexity of language or potential topics encountered during translation.

### How often is KeyBoy updated?

The latest version of KeyBoy is 1.3, and it was last updated on August 25, 2025. This suggests a relatively frequent update schedule for the application.

### Can I use KeyBoy to insert translated text into messages?

Yes, KeyBoy allows you to insert translated text directly, enabling smooth communication in foreign languages. This feature helps users chat effectively in languages they are learning.

## Version history (last 4 releases)

### 1.3 — 2025-08-25

Bug fixes and performance improvements.

### 1.2 — 2025-08-12

バグ修正とパフォーマンス向上。

### 1.1 — 2025-08-11

バグ修正とパフォーマンス向上。

### 1.0 — 2025-07-22

No release notes.

## Apps similar to KeyBoy

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Modern Military Aircraft](https://appshunter.io/ios/app/modern-military-aircraft/id1440183813) | 4.8 (38) | $1.99 | Reference |
| [Yuyu - AI外国語辞書](https://appshunter.io/ios/app/yuyu-ai/id6743394978) | — | Free | Reference |

## More apps by Yuta Kuchiba

- [Spoken - English Free Game](https://appshunter.io/ios/app/spoken-english-free-game/id6502973126)
- [Reiner](https://appshunter.io/ios/app/reiner/id6755907358)

All apps by Yuta Kuchiba: https://appshunter.io/developer/1693791672

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-13.*