AI keyboard for iPhone · also supports Zhuyin

Rewrite any message,
right from your keyboard

Type a rough draft, tap a prompt, and Keyly rewrites it in place. Fix typos, soften the tone, or translate without leaving the chat.

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5.0·App Store Rating

Custom AI prompts

The messages you send every day,
one tap away.

Write your own AI instruction in one sentence, save it, and rewrite in any app right from your keyboard. No copying into another AI app and pasting it back.

Write once, use every day
No app switching, no copy-paste
Comes out in your format and your voice

See how to write your own

(Guide currently available in Traditional Chinese)

Why Keyly is a better Zhuyin keyboard

A text filter shaped around you

Whether you are drafting a sincere message, a casual post, or a formal business document, you can write freely and apply the right AI filter in one tap. Use it fully offline when privacy matters, or connect to the cloud for stronger creative range from top-tier models.

Extremely smooth typing feel

To push third-party keyboard speed as far as possible, we built a Zhuyin engine that prioritizes fluidity. The touch boundaries are finely tuned, the haptic rhythm is deliberate, and the overall typing feel stays stable and satisfying.

Smart shortcuts ready mid-typing

This goes far beyond typo correction. Build your own AI commands for instant translation, long-form compression, or polished high-EQ replies, then call them with a quick gesture directly from the keyboard.

A high-standard privacy boundary

Conversation privacy is central to Keyly. We follow an ephemeral-processing principle so your text is destroyed after processing rather than stored long-term. We do not monitor, log, or repurpose your private data for model training.

FAQ Q&A

Is Keyly still good if I mostly use it as a regular keyboard?

Yes. The core of Keyly is a fast, precise Zhuyin engine built for clean correction and smooth input. Even without AI, it is meant to deliver a sharp and comfortable typing experience on iOS.

Which languages does Keyly support?

Our strongest focus is Traditional Chinese Zhuyin, with full mixed Chinese-English input support. On top of that, Keyly's AI can help with translation and multilingual refinement in one tap. AI output should still be reviewed before formal use.

Why do I need to enable “Allow Full Access”?

This is the technical requirement that allows a third-party iOS keyboard to connect to cloud AI services.

If you keep it off: you can still use Keyly's core Zhuyin engine without limitation. On supported devices, you can also keep basic on-device AI correction fully offline.

If you turn it on: we process only the data needed for features you actively trigger. Processing is primarily request-based, and retention is minimized where technically and operationally feasible; limited records may still be retained when required for legal compliance, security, or transaction verification. Keyly does not monitor or keylog your everyday private conversations.

Which cloud AI providers do you use, and is it safe?

We build on global top-tier providers including Google, OpenAI, and Anthropic. Keyly limits data use to user-initiated requests and does not allow your personal conversations to be used for model training. Request data retention is minimized subject to legal, security, and operational requirements.

Can I still use AI refinement without internet access?

Yes, if your device supports Apple's native on-device AI frameworks. On supported hardware, Keyly can refine text offline, which gives you both faster response time and stronger privacy guarantees.

Will very fast typing cause lag or crashes?

We built the product with a strict performance bar. Keyly is tuned by an experienced iOS engineering team and tested across multiple devices so that the typing flow stays stable, fluid, and responsive even at high speed.

How are my custom AI commands stored?

Your custom prompts stay under your control. They are currently stored locally on your device using encryption, and we are planning end-to-end encrypted sync so switching devices becomes more seamless later.

What is the difference between free download users and Keyly Pro?

Standard users (free download):
Free download includes the high-speed Zhuyin engine, the full standard prompt library, and a one-time gift of 30 cloud AI requests for newly signed-in accounts.

Keyly Pro subscription (US$4.99/month or US$39.99/year; the annual plan includes a 3-day free trial):
Built for heavy professional use. It unlocks unlimited cloud AI processing and adds the AI Prompt Manager so you can create, edit, and save custom commands that match your workflow.

Rewrite messages without leaving the chat

Get Keyly for AI rewriting and translation in any app, plus Zhuyin typing for Traditional Chinese.