AI Keyboard — User Guide

An Android keyboard (IME) that lets you speak instead of type. Optionally run the transcript through AI “prompts” to fix grammar or rewrite tone using Google’s Gemini API (requires your own API key).

Get started See dictation workflow Install on Google Play Send feedback

Optional AI correction requires your own Gemini API key. Free API keys can be used for output styles (Fix Grammar / Professional / Casual). Gemini Live streaming transcription may be limited or unstable on the free tier depending on quotas/plan and can incur costs for native audio models — see Gemini API pricing. Want a quick monthly estimate? Cost estimator. You can always use Android’s built-in transcription for free.

Features

What AI Keyboard can do:

Voice-to-text dictation inside any app (microphone button)
Gemini Live streaming transcription (availability depends on Gemini API plan/quota; may be unstable on free tier)
Optional AI correction/rewriting using Gemini (API key required)
Prompt chips for tone/style (Fix Grammar, Professional, Casual, etc.)
Correction preview with actions: Insert / Copy / Share / Dismiss
Settings for auto-correct, auto-insert, and auto-copy
Token usage statistics stored locally on-device

Setup (first time)

AI Keyboard is a system keyboard. You only need to enable and select it once.

1) Open AI Keyboard

Open the app from your launcher. You’ll see the setup wizard.

Setup wizard welcome screen — Setup wizard — Welcome

2) Enable the keyboard

Follow the wizard and enable AI Keyboard in your device’s input method settings.

Setup step: enable AI Keyboard — Setup wizard — Enable AI Keyboard

3) Select AI Keyboard as your current keyboard

Tap Select Keyboard, then choose AI Keyboard from the system picker.

Setup step: select AI Keyboard — Setup wizard — Select AI Keyboard

Android input method picker showing AI Keyboard — System UI — Choose input method

4) (Optional) Add a Gemini API key

Add your Gemini API key to enable AI correction/rewriting. You can skip this and add it later in Settings. Need help getting a key? Step-by-step guide.

Setup step: add Gemini API key — Setup wizard — API key (optional)

5) Done

Open any app with a text field and start using the microphone.

Setup complete screen — Setup wizard — You’re all set

How to use

Use AI Keyboard anywhere you can type.

Choose a prompt (style)

Prompt chips control how AI rewrites your text (for example: Fix Grammar vs. Professional tone).

AI Keyboard shown inside Messages with prompt chips — Keyboard view — prompt chips + QWERTY layout

Voice dictation

Tap the microphone button and speak. When you’re done, stop the recording.
If Auto-correct after voice is enabled, you may see two stop options: Stop + AI and Stop (no AI).

AI correction preview (Insert / Copy / Share)

When AI correction is enabled and your API key is configured, the corrected text appears in a preview panel. Insert it into the current field, or copy/share it.

Correction preview panel showing corrected text with Copy and Share actions — Correction preview — corrected text + actions

Settings & customization

API key & voice behavior

In Settings, you can add/clear your Gemini API key, toggle auto-correct after voice, and control whether corrected text is auto-inserted or auto-copied. Need help getting a key? Step-by-step guide.

Settings screen showing API configuration and voice input toggles — Settings — API configuration + voice input

Gemini Live vs Android transcription

Choose your speech recognition provider: Android (Free) uses the device SpeechRecognizer (recommended if you don’t have a paid Gemini plan). Gemini Live provides streaming transcription, but on the free tier it may be unstable or quota-limited. Free keys are still great for output styles (Fix Grammar / Professional / Casual). For native audio pricing details, see Gemini API pricing. For a quick monthly estimate, see Cost estimator.

Settings screen showing speech recognition provider options: Android (Free) and Gemini Live (Uses API Key) — Settings — speech recognition provider (Android vs Gemini Live)

Manage prompts

Enable/disable built-in prompts and keep only the styles you want to see on the keyboard.

Settings screen showing prompt toggles — Settings — prompts list

Create your own prompts

Add a custom prompt (e.g., “Make it more polite” or “Summarize”) and tune temperature.

Create custom prompt dialog with fields for name, description, and system prompt — Custom prompts — create and save your own instructions

Usage statistics

Track recent AI requests and token usage. This data is stored locally on your device.

Token Usage screen showing overview cards — Token usage — overview

Permissions & data (summary)

Microphone: used for voice dictation when you tap the mic.
Internet: required for AI correction requests (Gemini); voice dictation may also use network depending on your device’s speech recognition service. Gemini Live streaming transcription requires internet.
API key: stored encrypted on-device using AndroidX Security.
Usage stats: token usage is stored locally on-device.

Troubleshooting

The keyboard doesn’t appear: go to Setup/Settings → enable AI Keyboard, then select it as the current input method.
Microphone not working: grant microphone permission and try again.
AI correction not working: ensure a Gemini API key is configured and you have internet access.
Gemini Live not working: if you’re on the free tier, Live streaming can be unstable or quota-limited. Try again, confirm your API key and plan/quota, or switch Settings → Speech Recognition → Provider to Android (Free) for transcription and keep using Gemini for output styles. See Gemini API pricing.

Support contact

Developer: YCK
Email: support@kengblog.com
Google Play: play.google.com/store/apps/details?id=com.kengblog.aikeyboard
Feedback: https://forms.gle/EVX64Rimp2fQsJxh8
Closed testing: How to join & help test