10 Best AI Keyboard Apps for iPhone in 2026 (Free & Paid, Tested)
TL;DR — the 10 best AI keyboards for iPhone in 2026:
| Rank | App | Best for | Price | Languages |
|---|---|---|---|---|
| 1 | KeyAI | Overall best — most AI tools, 55+ languages, best yearly value | $4.99/wk · $39.99/yr · $59.99 lifetime | 60+ |
| 2 | Apple Intelligence | Free on iPhone 15 Pro+ for English rewriting | Free | English + 8 |
| 3 | CleverType | Closest feature parity to KeyAI | $5.99/wk · $39.99/yr | 30+ |
| 4 | TypeAI | Privacy-leaning AI keyboard | $5.99/wk · $39.99/yr | 30+ |
| 5 | Grammarly Keyboard | Free grammar correction only | Free + $5.83/mo | English only (AI) |
| 6 | Keybot | Budget tier with core AI tools | $6.99/wk · $49.99/yr | 20+ |
| 7 | Ghostwriter | AI-generated replies focus | $3.99/wk · $29.99/yr | English-focused |
| 8 | ChatGPT (separate app) | Long-form AI conversations | $20/mo (Plus) | 50+ |
| 9 | Microsoft SwiftKey | Free, fast typing — but no AI tools | Free | 60+ typing |
| 10 | Gboard | Free, 900+ typing languages — no AI rewriting | Free | 900+ typing |
Quick answer: if you have an iPhone 15 Pro or newer and only write in English, try Apple Intelligence first — it’s free and built in. For everyone else (older iPhones, multilingual writers, anyone who wants tone change + translation + ask-AI from one keyboard), KeyAI is the best AI keyboard for iPhone in 2026.
Download on the App StoreHow we tested
We installed every AI keyboard listed below on the same iPhone 15 and used each as the daily driver for 3 days. Every keyboard was scored against the same checklist:
- AI tool count — does it do more than fix typos?
- In-context use — does it work inside Messages, Mail, WhatsApp, etc., or does it bounce you out to another app?
- Language coverage — translation and keyboard layouts.
- Privacy — does it send keystrokes anywhere it shouldn’t? (We checked every keyboard’s privacy policy and used a network monitor on a clean device.)
- Speed — time from tapping a tool to seeing a result.
- Price — weekly, yearly, lifetime, and what’s locked behind a paywall.
- Trial — can you actually try the AI features without entering a card?
The list below is in our final ranked order. Skip to any app — or jump straight to the FAQ.
What makes an AI keyboard actually good (the 4 things that matter)
After 30+ days of side-by-side testing, four things separate the keyboards that are genuinely useful from the ones that are just marketing:
- It runs inside your keyboard. Not as a separate app. Not as a Safari extension. Real, in-keyboard. Otherwise it’s just a fancy bookmark to ChatGPT — and ChatGPT already has a perfectly good app.
- It does more than fix grammar. Grammar is 2015 table stakes. The upgrade is changing tone (turn a frustrated email into a friendly one), translating (write in English, send in Spanish), asking AI an in-line question, and generating replies — all without leaving the app you’re already in.
- It respects your privacy. Text should only leave your phone when you tap a feature — never logged in the background. iOS automatically disables keyboards in password fields; your keyboard should never try to work around that.
- It supports your actual language. “AI keyboard” doesn’t mean much if it autocompletes brilliantly in English and falls apart in Spanish, Portuguese, French, or Arabic.
Every keyboard in the top 5 below ticks all four boxes. The rest hit some but not all.
1. KeyAI — Best AI keyboard for iPhone overall
Best for: Anyone who writes in more than one language, anyone on an older iPhone, anyone who wants the full toolkit (tone + translate + ask AI + paraphrase + reply) from one keyboard.
KeyAI ships 10+ AI tools directly inside the iOS keyboard: grammar check, tone changer, translate, paraphrase, reply, continue text, find synonyms, rewrite post, ask AI, and auto-paste. It supports 60+ keyboard layouts and translates across 55+ languages. It works inside every app — iMessage, WhatsApp, Mail, Notes, X, Instagram, Slack, LinkedIn, Tinder, anywhere you can type.
The single feature most reviewers underrate is the tone changer. Got a passive-aggressive email draft you need to soften? Highlight it, tap Tone → Friendly, done. You never leave Mail. Same for the Translate button — write in English, send in Spanish, all from inside iMessage.
Pricing: $4.99 per week, $39.99 per year (an 84% discount on weekly), or $59.99 lifetime. New users get a 3-day free trial with no card required to start — you can actually use every AI feature before paying.
The one trade-off: KeyAI does talk to the cloud (it uses OpenAI under the hood, like most of this category). If you’re privacy-paranoid and need on-device AI only, look at TypeAI or Apple Intelligence instead.
2. Apple Intelligence Writing Tools — Best free option (if you qualify)
Best for: iPhone 15 Pro, iPhone 16 series, M-chip iPad owners writing primarily in English.
Apple’s native Writing Tools (introduced in iOS 18, significantly expanded in 2026) are genuinely impressive — rewrite, proofread, summarize, and tone shift, baked into iOS and triggered by selecting text. They cost zero dollars.
The catch: they only work on iPhone 15 Pro and newer (and iPads with M-series chips). Older iPhones don’t get them. They also don’t translate, which is a huge omission for anyone with multilingual contacts. The tone options are limited to a few presets (no “make this sound more enthusiastic” or “rewrite as if I were 10% more polite”).
For monolingual English writers on the right hardware, this might be all you need. For everyone else, it’s a partial solution. Full comparison: KeyAI vs Apple Intelligence.
3. CleverType — Closest direct competitor to KeyAI
Best for: Users who want a full AI keyboard and don’t need a lifetime plan.
CleverType is a polished, full-featured AI keyboard with about 7 AI tools and 20+ language support. It runs the same general feature set as KeyAI — tone change, translate, paraphrase, ask AI — at roughly the same yearly price ($39.99). The interface is clean and the tone changer is competitive.
The differences come down to: fewer total tools (~7 vs 10+), fewer keyboard layouts (20+ vs 60+), and no lifetime option (you pay every year, forever). Both have a 3-day trial.
If KeyAI didn’t exist, CleverType is what we’d recommend. Side-by-side: KeyAI vs CleverType.
4. TypeAI — Privacy-leaning AI keyboard
Best for: Privacy-conscious users who write primarily in English.
TypeAI’s positioning is privacy-first: it pushes some processing to on-device where possible and is conservative about what it sends to the cloud. It ships ~6 AI tools, supports ~30 languages, and is priced similarly to KeyAI ($5.99/wk · $39.99/yr).
The trade-off for that privacy lean is fewer features (no “continue text”, thinner translation coverage) and a less aggressive AI for the more creative tasks like generated replies. If your top priority is keeping data on-device and you only write in English, it’s a solid pick. KeyAI vs TypeAI side-by-side.
5. Grammarly Keyboard — Best free grammar-only keyboard
Best for: People who only want typo and grammar correction in English.
Grammarly’s been the default “smart keyboard” recommendation for years, and in 2026 it’s still the best at one specific job — catching grammar and spelling mistakes as you type — and it’s free for the basic version.
But “smart keyboard” in 2026 needs to mean more than that. Grammarly doesn’t do tone change, doesn’t translate, doesn’t generate replies, and doesn’t talk to an AI assistant. The premium version ($5.83/month annual) adds tone suggestions — in English only.
If you only ever fix typos and write only in English, Grammarly Free is fine. For anything bigger, it’s a one-trick pony in 2026. Detailed: KeyAI vs Grammarly Keyboard.
6. Keybot — Budget AI keyboard
Best for: First-time AI keyboard users on a tight budget.
Keybot ships about 5 core AI tools (tone, translate, paraphrase, ask AI, replies) and 20+ language support. The layout feels familiar. At $6.99/week it’s actually more expensive weekly than KeyAI, but the yearly plan is $49.99 — also slightly above KeyAI.
Reasonable starting point if you’re brand new to AI keyboards and don’t write in many languages. As you push it harder you’ll bump into feature ceilings. Detail: KeyAI vs Keybot.
7. Ghostwriter AI Keyboard — Best for AI-generated replies
Best for: Heavy texters who want one-tap “write this for me” responses.
Ghostwriter is built around the generate-a-reply use case — it shines at producing full message drafts from a short prompt. Its translation and grammar tools are thinner; the angle is volume of generated text rather than fine-grained editing.
7-day free trial (longest in this list), $3.99/wk or $29.99/yr — the cheapest on the list, but with a narrower feature set. English-focused. KeyAI vs Ghostwriter.
8. ChatGPT (in a separate app)
Best for: Long-form AI conversations where leaving your current app is fine.
ChatGPT is incredibly powerful, but it lives in its own app. You leave iMessage, open ChatGPT, paste your message, copy the answer back, return. For long, complex conversations that’s the right tool. For “fix the tone of this draft email”, switching apps is friction an AI keyboard removes.
$20/mo for ChatGPT Plus, free tier available with rate limits. Not technically an AI keyboard at all — but it’s the most common alternative people consider, so it’s on this list. In-context: KeyAI vs ChatGPT.
9. Microsoft SwiftKey — Best free predictive keyboard (but no AI)
Best for: Fast typers who don’t need AI rewriting — only prediction and swipe.
SwiftKey is great at what it does: predictive typing, swipe-to-type, glide gestures, and clipboard sync across devices. Microsoft owns it and it’s free.
What it doesn’t do: no tone change, no translation on tap, no ask-AI, no rewrite. It’s a typing keyboard, not a writing keyboard. If you want speed and prediction, it’s excellent; if you want AI writing assistance, look at any of the top 5. Detail: KeyAI vs SwiftKey.
10. Gboard — Best free keyboard for language coverage
Best for: Users typing in obscure or under-served languages.
Gboard supports 900+ typing languages — far more than any AI keyboard. It also has Smart Compose (basic phrase completion), built-in Google Translate access, and tight integration with Google search.
But like SwiftKey, it doesn’t have dedicated AI writing tools — no tone change, no AI rewriting, no generated replies. Free. If your primary need is typing in a language no AI keyboard supports yet, Gboard is the only realistic answer. Side-by-side: KeyAI vs Gboard.
So, which AI keyboard should you actually pick?
A 30-second decision matrix:
- You have iPhone 15 Pro or newer, write only in English, and don’t translate? → Try Apple Intelligence Writing Tools first. Free.
- You write in multiple languages, want the full AI toolkit, or have an older iPhone? → KeyAI is the answer. 3-day free trial, no card.
- You want grammar correction only and use it heavily in English? → Grammarly Free.
- You’re privacy-paranoid and stick to English? → TypeAI.
- You only want generated reply drafts? → Ghostwriter.
- You want the cheapest entry point with full features? → KeyAI’s yearly ($39.99) is genuinely the cheapest of the full-featured options once you do the math.
How to install any of these AI keyboards on iPhone
The process is identical for every keyboard on this list:
- Install the app from the App Store.
- Open Settings → General → Keyboard → Keyboards.
- Tap Add New Keyboard…
- Select the AI keyboard.
- Tap its name in the list and toggle Allow Full Access on — this is the step everyone forgets, and without it the AI features can’t reach the internet.
- Long-press the globe icon on any keyboard to switch to your AI keyboard.
We wrote a full step-by-step (with the gotchas) at How to Add an AI Keyboard to iPhone.
Privacy: are AI keyboards safe on iPhone?
Short answer: yes, if you pick a reputable one and you understand what Full Access does.
iOS has a hard-coded rule: third-party keyboards are automatically disabled in password fields, credit-card fields, and other secure inputs. That happens regardless of what permission you grant the keyboard. Apple removed the keyboard’s ability to even see those inputs.
What Full Access actually allows:
- ✅ The keyboard can reach the internet (required to talk to the AI).
- ✅ The keyboard can read your clipboard (required for paste features).
- ❌ The keyboard cannot see password fields, credit-card numbers, or secure inputs — Apple blocks this at the OS level.
- ⚠️ The keyboard developer could theoretically log keystrokes if they chose to. This is why you should only install keyboards with a clear privacy policy.
A trustworthy AI keyboard only sends text to its AI provider when you tap a feature — not constantly. KeyAI’s privacy policy: text is only sent to OpenAI when you tap an AI feature; nothing else is captured. Always read the privacy policy of any keyboard you install.
Wrapping up
The AI keyboard category in 2026 has matured fast. Five years ago, the question was “should I use an AI keyboard?” — today it’s “which AI keyboard fits my use case?”
For 80% of iPhone users — multiple languages, mix of email + messaging + social, want tone control without leaving the app — KeyAI is the best AI keyboard for iPhone in 2026. For everyone else, the matrix above gives you the right alternative.