KeyAI - AI Keyboard & Writer

Grammar, Translate & Rewrite

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

KeyAI is an AI keyboard and a full writing workspace in one app. Install the keyboard once and fix grammar, translate, change tone or rewrite anything without leaving the app you are typing in. Open KeyAI itself when you need the bigger jobs: emails, summaries, humanizing and chat. WORKS INSIDE EVERY APP Type as usual, tap a command, and the result replaces your text in place. No copying, no pasting, no app switching. * Check Grammar: catch spelling, grammar and punctuation before you hit send. * Humanize: turn stiff, robotic text into writing that sounds like a person. * Translate: 29 languages, straight from the keyboard. * Paraphrase: say the same thing a better way. * Tone Changer: 12 tones, from Professional and Confident to Friendly, Witty or Flirty. * Reply: get a context-aware answer to the message in front of you. * Ask AI: ask anything mid-conversation, then continue the chat in the app. * Find Synonyms: better word choices, picked to fit your sentence. * Emojify: add the right emoji, not a random handful. * AutoPaste: save the lines you send all the time and drop them in with one tap. A COMPLETE AI WRITING TOOLKIT * Humanizer: rewrite AI-sounding text with control over length, similarity and style. Paste text or upload a document. * AI Detector: see how likely a piece of text is to read as AI-written, with a breakdown of why. * Grammar Checker: corrections you can review before you accept them. * Paraphrase: multiple rewriting styles for essays, posts and messages. * Translate: 29 languages with automatic source detection. * Text Summarizer: long text into a short summary, bullets or key points. * Email Writer: write a new email or reply to one, choosing intent, length, tone and language. * Chat With AI: a full conversation whenever a single command is not enough. MAKE THE KEYBOARD YOURS * Pick which commands appear and in what order. * Add your own commands with your own prompt. * Browse 87 ready-made prompts across Email, Texting, Social Media, Work, Study and more. * Offline word suggestions and spelling help while you type, plus a built-in emoji keyboard. * Sound and haptic feedback you can switch off. EVERYTHING IN ONE HISTORY Every result, from the keyboard or the app, lands in one searchable History. Reopen it, copy it, or pick up where you left off. BUILT WITH PRIVACY IN MIND Your text is only sent when you run a command, over an encrypted connection, and it is not kept afterwards. iOS never gives a custom keyboard the contents of password or payment fields, so KeyAI cannot see them. KEYAI PRO KeyAI is free to try with a set number of AI generations each day, shared between the app and the keyboard. KeyAI Pro removes the daily limit and unlocks every tool. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Privacy Policy: https://humanizertool.io/en/privacy Terms of Use: https://humanizertool.io/en/terms

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

The developer, Pistol Adrian, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Pistol Adrian
Size
  • 44.6 MB
Category
  • Utilities
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
  • Yearly Subscription Trial $69.99
  • Weekly Subscription $9.99
  • Learn More
Copyright
  • © HumanizerTool.io
  • Developer Website
  • Privacy Policy

    • More by Pistol Adrian