Best AI Keyboard Apps for iPhone (2026)

Searches for AI keyboards on iPhone are rising, and most people are dealing with paradox of choice: too many apps, unclear differences, no obvious pick. This is a roundup of keyboard apps: Microsoft SwiftKey, Gboard, Grammarly Keyboard, Typewise, CleverType, and KOPY. It is not a buying guide for screenshot rizz apps or chatbot reply workflows. That guide is best AI text reply app for iPhone 2026.

I built one of the rows in this table, so read me with that bias. I still use stock iOS for passwords. I still keep SwiftKey installed on a test phone because prediction and reply generation are different jobs.

Key takeaways

• Pick a reply-first keyboard if the pain is "I do not know what to say." Pick a prediction-first keyboard if the pain is typos.
• Apple's custom keyboard documentation is the shared constraint: extensions, Full Access, tight memory. Tutorial: enable a custom keyboard on iPhone.
• Engineering explainer: how iOS keyboard extensions work.

Quick comparison table

App	Best for	AI / reply depth	Typing / prediction	Privacy notes	Tradeoff
KOPY	AI-generated replies	Mode + tone generate from copied context	Not trying to replace system autocorrect	Network generate; Full Access for clipboard	Reply-first, not a full writing suite
Microsoft SwiftKey	Prediction + typing speed	Some rewrite helpers depending on version/region	Strong learning and swipe	Microsoft account features; read their policy	Not purpose-built for full reply generation from a thread
Gboard	Google ecosystem users	Voice, GIFs, search; reply AI varies by surface	Excellent defaults, glide typing	Google account; search integration	Great daily driver, uneven as a dating-reply tool
Grammarly Keyboard	Polished professional writing	Grammar + rewrite quality	Fine, not the point	Grammarly account; writing samples	Heavier than chat-first workflows
Typewise	Error reduction	Assistive AI features vary	Distinct layout, fewer typos for some users	Check current policy	Learning curve on the grid
CleverType	Casual AI features	Prompted rewrite options	Secondary	Check current policy	Output consistency can vary

KOPY

KOPY is the keyboard I ship. You copy a message, switch with the globe, pick Social / Work / Dating / Insight plus a tone, generate into the field. Strength is context-to-reply speed. Weakness is I will not pretend we are a better swipe-typing engine than Gboard. Thesis: why we built a keyboard.

I will not quote a fabricated star rating or MAU. Install it and time a reply. That is the review.

Microsoft SwiftKey

SwiftKey earned its install base on prediction, not on Hinge banter. If your thumbs are slow and your English is mixed with another language, it is still a reasonable daily keyboard. If you need a full reply from a copied Slack, you will feel the gap. Use it as the typing layer, switch to a reply keyboard when stuck. That hybrid is sane.

Gboard

Gboard is the default for people who live in Google. Voice input and search-on-keyboard are the magic. AI reply depth depends on what Google has enabled on that OS version, which is a moving target. I do not treat Gboard as a dating coach. I treat it as infrastructure.

Grammarly Keyboard

Grammarly's 2024 business communication research is why this row exists: 19 hours a week writing, 88% of the week communicating, 80% of gen-AI users in that study saying quality improved. The keyboard is a mobile slice of that grammar-and-rewrite machine. Excellent for LinkedIn paragraphs. Slower if you want a two-line WhatsApp joke. Category overlap with our Work mode, different philosophy (edit your words vs generate a reply from theirs).

Typewise

Typewise bets on layout to cut typos. If you never bonded with QWERTY on glass, try it for a week. The AI extras are not why I would install it. The grid is. Learning curve is real. Do not test it only on a dating opener or you will confuse layout pain with product quality.

CleverType

Casual AI rewrite keyboards come and go. Judge CleverType on whether the rewrite sounds like a person on your phone, not on the App Store trailer. Consistency has been the historical weakness of this subcategory. Re-test before you pay yearly.

How to choose in 60 seconds

If your main pain is "I don't know what to reply," pick a reply-first keyboard. If your pain is typos and typing speed, pick a prediction-first keyboard. Authority bias is real in roundup content, so here is the honest version: no single app is best at everything. KOPY is strongest when you need context-aware replies in messaging apps.

You can keep two keyboards enabled. Apple lets you cycle the globe. I do.

Safety

Are AI keyboards safe on iPhone? Safety depends on Full Access, clipboard handling, and storage. Read the policy. Disable the extra keyboard in banking apps if you are paranoid. I am, for passwords.

Field notes

Memory limit around 70MB in extensions is why we do not ship a local 7B model in the keyboard. Everyone in this table that does serious AI is calling a server or a very small on-device feature. Ask which.

Setup will fail if users skip Full Access and then file "clipboard empty" reviews. I wrote a whole tutorial because of those reviews.

Frequently asked questions

What is the best AI keyboard app for iPhone? For AI-generated replies, KOPY is the one I built for speed and tone control. For autocorrect and prediction, SwiftKey and Gboard are strong.

Is Grammarly Keyboard good for AI replies? Excellent grammar and professional rewrites. Less focused on chat-first context-to-reply.

Can I use two? Yes. Globe between them.

Keyboard-app decision notes, not a reply-app essay

SwiftKey plus KOPY

This is my honest dual setup on a test phone. SwiftKey for languages and swipe. KOPY when a reply needs a brain. Globe is annoying and still cheaper than a companion app.

Gboard plus KOPY

Same hybrid if you live in Google. Do not ask Gboard to be a dating coach. Do not ask KOPY to be a GIF search.

Grammarly Keyboard alone

Fine if your job is LinkedIn paragraphs and docs. Weak if your job is WhatsApp. Their 2024 research is about work writing volume. Respect that lane.

Typewise alone

Try it for typos for seven days in Notes, not on Tinder. You will confuse layout pain with AI quality if you test on dates.

CleverType as only keyboard

Re-test every quarter. Casual AI keyboards churn. If rewrites feel samey, you are in the consistency trap I mentioned in the table.

Stock iOS plus KOPY

Valid. Autocorrect got better. If you do not need swipe, skip SwiftKey. Fewer keyboards, fewer globe accidents.

Banking

Switch to stock. I do. Custom keyboards and password fields are a combo I will not defend.

Kids' iPad

Do not install a reply AI keyboard on a child profile as a toy. This roundup is adult messaging.

Enterprise phones

Ask IT. Some MDM stacks block third-party keyboards. That is not me being difficult. That is Apple plus policy.

What this table is not

It is not ChatGPT vs Claude. It is not rizz screenshot apps. Those architectures have their own URL. If you landed here from 'best reply app,' go to that post.

RAM and why everyone phones home

If a keyboard promises a huge local model, ask how it fits in an extension. I generate on a server because physics.

Reviews that mention MAU

I still will not invent ours. If another row brags unverifiable installs, discount it. Time a reply on your device.

How I actually switch keyboards in a day

Stock keyboard for passwords and 2FA. Non-negotiable. If a roundup tells you to use an AI keyboard on your bank, close the tab.

Gboard or SwiftKey when I am typing a long note in my own words and I want swipe or multilingual prediction. That is a typing job.

KOPY when the job is 'turn their last bubble into my next bubble.' That is a reply job. If I blur those jobs I ship a worse product and you buy the wrong row of the table.

Grammarly Keyboard when I am in LinkedIn about to post a paragraph I will regret. Rewrite, not generate-from-their-message. Adjacent, not identical.

I keep the globe set so cycling is predictable. Five keyboards is how you tap past KOPY and think generate is broken. Two or three max. This is still a keyboard roundup, not a chatbot comparison.

More questions people ask after reading this

Is Apple's built-in writing tools a row in this table?

They are a moving system feature, not a third-party keyboard app. This roundup is installable keyboards. If Apple ships a great rewrite, use it. It still may not be a dating-reply generator from copied chat.

Can I use KOPY as my only keyboard?

You can type on it, but I did not build a better QWERTY. Hybrid is the honest recommendation. That is why SwiftKey and Gboard are in the table.

Which is best for bilingual typing?

Usually SwiftKey or Gboard. Not us. Reply generation is language-flexible at the model, but prediction is their sport.

Are these safe for work phones?

Ask IT. Many enterprises block third-party keyboards. A roundup cannot override MDM.

Why is ChatGPT not in the table?

It is not a keyboard app. Architecture comparison is another URL. I will keep repeating that until the crawlers learn taxonomy.

Will you add more rows later?

If the product is actually a keyboard people use for typing or replies. I will not add a random GPT wrapper to look comprehensive.

Sources

Source — Apple Developer Documentation, Custom Keyboards, retrieved 2026-09-07.

Source — Grammarly / Harris Poll, 2024 State of Business Communication, retrieved 2026-09-07.