# KOI Keyboard

> KOI Keyboard (iPhone/iPad app by Chi Yu Cheng.)

- Source: https://appshunter.io/ios/app/koi-keyboard/id6789937180 (this page in markdown: same URL + `.md`)
- Developer: [Chi Yu Cheng](https://appshunter.io/developer/1896654870)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 214 MB
- Languages: American English
- Released: 2026-10-05
- Data updated: 2026-10-10

## What is KOI Keyboard?

KOI Keyboard，為繁體中文日常輸入而設。從逐字輸入到中英混打，讓你按自己的習慣打字。

【五種中文輸入方式】
支援倉頡、速成、筆劃、廣東話拼音及台灣注音，配合英文輸入，毋須為中英夾雜的訊息不停切換鍵盤。

【打字方式，由你選擇】
支援滑行輸入、連續倉頡及連續速成。候選字、聯想與中文自動修正，幫你更順手地完成句子；各項功能可按需要開關。部分進階功能需要下載額外資源。

【唔記得點拆？手寫搵字】
內建手寫辨識，方便查找不熟悉的字。日常輸入與手寫互相配合，照顧不同打字習慣。

【游標同按鍵，都可以就手】
滑動移動游標，左右微調，上下作較大幅度移動。可調整鍵盤外觀、按鍵大小、聲音與觸感回饋。

【你的鍵盤，你的外觀】
提供免費外觀，以及可獨立一次性購買的主題。Plus 有效期間可使用全部主題；獨立購買的主題不受 Plus 到期影響。

【KOI Agent】
需要時可使用 Agent 協助回覆、改寫、翻譯、問答及製作圖片與貼圖。Agent 需要網絡連線及完整取用權限，並按功能消耗 Credits；可用功能與費用以 App 內顯示為準。

【清楚的選擇】
核心中文輸入在裝置上處理。你可以自行選擇是否使用雲端 Agent 及 iCloud 同步，亦可在設定中調整各項輸入功能。

Plus 為自動續期訂閱；價格、週期及所包含的權益會在購買前顯示。訂閱由 Apple 帳戶管理，可在 App Store 帳戶設定中取消。其他 App 內購買項目以購買畫面說明為準。

支援：https://koi.rainsday.com/support/
私隱政策：https://koi.rainsday.com/privacy/
使用條款：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 稜鏡主題 | $0.99 | one-time |
| 脈衝主題 | $0.99 | one-time |
| 浮影主題 | $0.99 | one-time |
| 座標主題 | $0.99 | one-time |
| 翹角主題 | $0.99 | one-time |
| 柔丘主題 | $0.99 | one-time |
| 隱翹主題 | $0.99 | one-time |
| 隱翹・律主題 | $0.99 | one-time |
| 隱翹・霓主題 | $0.99 | one-time |
| KOI Keyboard Sizing | $1.99 | one-time |


## Is KOI Keyboard safe?

Not enough ratings yet to assess KOI Keyboard.

## Is KOI Keyboard legit?

KOI Keyboard appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for KOI Keyboard is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-10-08

改善已購主題及功能的離線使用，修正會員資格確認、鍵盤主題閃爍及墨金按鍵圓角顯示問題，並改善首次設定的主題預覽。 首次設定現可一鍵保留草稿並返回主頁。 啟動載入畫面換上 KOI App 標誌。

### 1.0 — 2026-10-06

No release notes.

## Apps similar to KOI Keyboard

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Flow Keyboard: AI Voice Typing](https://appshunter.io/ios/app/flow-keyboard-ai-voice-typing/id6758776986) | 4.6 (10) | Free | Utilities |
| [Nyoki! Mushroom Timer](https://appshunter.io/ios/app/nyoki-mushroom-timer/id6763967229) | — | Free | Utilities |
| [Live Speech to Text: iScribe](https://appshunter.io/ios/app/live-speech-to-text-iscribe/id6468081340) | 4.0 (122) | Free | Utilities |
| [Kaiboard 中英混合鍵盤](https://appshunter.io/ios/app/kaiboard/id946910980) | 4.9 (25) | Free | Utilities |
| [GPT旅行翻譯神器](https://appshunter.io/ios/app/gpt/id6599854780) | 4.0 (2) | Free | Utilities |
| [Metronome - Tempo & Rhythm](https://appshunter.io/ios/app/metronome-tempo-and-rhythm/id6499259671) | 5.0 (4) | Free | Utilities |

## More apps by Chi Yu Cheng

- [Trips Expense](https://appshunter.io/ios/app/trips-expense/id6769398965)
- [WildFrog](https://appshunter.io/ios/app/wildfrog/id6778885865)

All apps by Chi Yu Cheng: https://appshunter.io/developer/1896654870

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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 2026-10-10.*