Ranking updated
Best AI keyboard apps in 2026
For an AI chat, message drafts in several tones and web search without leaving the keyboard, AI Keyboard - AI Chat & Reply. For grammar fixes and rewrites of a whole message in any app, Grammarly. To speak and get polished, formatted text, Wispr Flow. For AI replies to a chat, from a pasted message or a screenshot, in the tone you pick, Reply Lab. For quick replies and next-word prediction on social apps, AI Keyboard Pro. Full breakdown below.
How we picked: we read each app’s own App Store description for what the AI does inside the keyboard, write, rewrite, correct, reply or transcribe, and whether it works in every app without copy and paste. We do not quote prices; check them in the store for your country. For keyboard themes and layouts, see our guide to custom keyboard apps.
An AI assistant inside the keyboard
AI Keyboard - AI Chat & Reply puts an AI chat right in the input field: ask questions, get a message, email or reply written in formal, friendly and concise variants, and insert, copy or share the one you like. Smart buttons insert text, open links or call numbers, a spelling button fixes typos in one tap, and an AI memory keeps your name, profession, language and preferences, which you can view, edit and delete. From any app you can share selected text to it and run a ready-made or your own prompt, such as translation, summarising or tone changes, and it adds stock photo search and web search with links. For downtime it even carries mini games, including DOOM powered by Freedoom.
Fix, rewrite or dictate
Grammarly works as a keyboard in your iPhone and iPad apps with no copy and paste: spelling, grammar and conciseness suggestions, tone detection, multi-word predictions, smart autocorrect, synonyms and swipe typing, and generative AI rewrites that give you a new version of the whole message, adjusted for length, fluency or tone. Its voice dictation removes filler words and fixes grammar as you speak. Wispr Flow is a voice-first keyboard: you talk naturally inside any app, Slack, Messages, email, WhatsApp or Docs, and it writes clean, formatted text, handling punctuation, adapting tone for email or texting, and learning custom names, acronyms and phrases.
AI replies for chats and social apps
Reply Lab writes replies inside whatever app you are texting in, iMessage, WhatsApp, Instagram, Snapchat, Tinder or Slack: you switch to it with the globe key, paste a message or a screenshot of the conversation and get context-aware suggestions in the tone you choose, from professional to flirty or funny. You can write your own instructions to build custom reply modes and share them with others. AI Keyboard Pro is built around fast replies on social apps, a comment on X, an Instagram caption or a WhatsApp chat, as well as emails and documents; its assistant suggests alternative words, completes sentences and predicts your next word as you type.
| App | Main AI job | Input | Extras |
|---|---|---|---|
| AI Keyboard - AI Chat & ReplyCensuusApp Store | chat and message drafts with tone variants | typing, share from any app | AI memory, photo and web search, mini games |
| GrammarlyApp Store | grammar fixes and full-message rewrites | typing and voice dictation | tone detection, multi-word predictions |
| Wispr FlowApp Store | speech into polished, formatted writing | voice | custom names and acronyms |
| Reply LabApp Store | replies to a chat in a chosen tone | pasted message or screenshot | custom AI modes |
| AI Keyboard ProApp Store | quick replies and captions for social apps | typing | word suggestions and next-word prediction |
Frequently asked questions
What is the best AI keyboard for iPhone?
It depends on the job: AI Keyboard - AI Chat & Reply for a full AI chat and drafts in the keyboard, Grammarly for fixes and rewrites, Wispr Flow for voice typing and Reply Lab for replies to chats.
Is there a keyboard that writes replies to texts with AI?
Reply Lab generates replies from a pasted message or a screenshot of the chat, in the tone you pick, and AI Keyboard - AI Chat & Reply drafts replies in formal, friendly and concise variants.
Can an AI keyboard turn my voice into text?
Wispr Flow turns speech into polished, formatted writing in any app, and Grammarly has voice dictation that removes filler words and fixes grammar.
Do AI keyboards work in every app?
Grammarly, Wispr Flow and Reply Lab describe themselves as working inside any app you type in, with no copy and paste, and AI Keyboard - AI Chat & Reply also takes text shared from other apps.