# KeyFlow AI Keyboard & Writer — Grammar, Rewrite & Translate

> AI-powered iPhone keyboard for grammar correction, tone adjustment, translation, and writing assistance. (iPhone/iPad app by Lumozz.)

- Source: https://appshunter.io/ios/app/keyflow-ai-keyboard-and-writer/id6758787816 (this page in markdown: same URL + `.md`)
- Developer: [Lumozz](https://appshunter.io/developer/1875045168)
- Category: Productivity
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 18.0 · 19 MB
- Languages: American English
- Released: 2026-03-10
- Data updated: 2026-10-31
- Monetization: free with in-app purchases

## What is KeyFlow AI Keyboard & Writer?

Type it messy. Send it right.

KeyFlow is an iPhone keyboard with AI writing tools in the row above your keys. Write your message the way you'd say it, then tap once to fix the grammar, make it shorter, change the tone or translate it. Every change is highlighted before it replaces your text, and the original is one tap away.

ONE ROW, EVERY APP
• Fix Grammar: spelling, punctuation and grammar.
• Improve Writing and Make Shorter.
• Change Tone: professional, friendly, casual or formal.
• Translate between English and Spanish.
• Explain This and Ask AI, without leaving the chat.
• Snippets: save the lines you type every week and send them in one tap.
• Your own actions: write a prompt once and it becomes a button.

WRITE IN YOUR LANGUAGE
AI actions reply in the language you wrote in, so they work in many languages. Typing, autocorrect and predictions are in English and Spanish; switch with the globe key.

FIX JUST ONE SENTENCE
Select a sentence and KeyFlow rewrites only that part. The rest of your message stays exactly as you wrote it.

PREFER TO TALK?
Record in the KeyFlow app and use the transcription in your writing. Dictation needs microphone access and an internet connection.

START FREE
Eligible installs include a limited AI trial and the full keyboard. Choose KeyFlow Pro for managed AI with nothing to set up, or Lifetime BYOK: pay once and use your own OpenAI API key, billed by OpenAI separately. Pro has usage limits. Plans, limits and your local price are shown in the app before you buy. Restore purchases at any time.

YOU DECIDE WHAT'S SHARED
Ordinary typing shares nothing with AI. An AI action sends the text you selected to OpenAI (with nothing selected, the current field); dictation sends the recorded audio. AI sharing needs your permission and can be turned off in Settings. Keyboard AI also needs iOS Full Access. No KeyFlow account.

Works in Messages, Mail, Notes, WhatsApp and other apps with standard text fields. Password fields always use the system keyboard.

Support: hello@lumozz.com
Privacy: https://keyflow.lumozz.com/privacy.html
Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- AI grammar and spelling correction
- Tone adjustment (professional, friendly, casual)
- Text translation (English/Spanish)
- Sentence rewriting and shortening
- Customizable AI actions and snippets
- Dictation with transcription

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| KeyFlow Pro | $4.99 | per month |
| KeyFlow Pro | $39.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| KeyFlow BYOK Lifetime | $14.99 | one-time |


## Is KeyFlow AI Keyboard & Writer safe?

Not enough ratings yet to assess KeyFlow AI Keyboard & Writer.

## Is KeyFlow AI Keyboard & Writer legit?

KeyFlow AI Keyboard & Writer has limited verification signals. The AppsHunter Legitimacy Score for KeyFlow AI Keyboard & Writer is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about KeyFlow AI Keyboard & Writer

### Does KeyFlow have ads?

KeyFlow is free to download and does not contain advertisements. Users can access a limited AI trial and the full keyboard functionality without ads.

### What are the subscription options for KeyFlow Pro?

KeyFlow Pro offers two subscription plans: a monthly subscription for $4.99 and an annual subscription for $39.99. These plans provide managed AI features with usage limits.

### Can I use my own OpenAI API key with KeyFlow?

Yes, KeyFlow offers a Lifetime BYOK (Bring Your Own Key) option. This allows you to use your own OpenAI API key, with billing handled separately by OpenAI.

### What languages does KeyFlow support for typing and AI actions?

Typing, autocorrect, and predictions are available in English and Spanish. AI actions reply in the language you wrote in, supporting many languages.

### How does KeyFlow handle user data and privacy?

Ordinary typing shares nothing with AI. AI actions send selected text to OpenAI with user permission, which can be turned off in Settings. Keyboard AI requires iOS Full Access.

### What devices is KeyFlow compatible with?

KeyFlow is designed for iPhone and works in apps with standard text fields like Messages, Mail, Notes, and WhatsApp. It requires iOS Full Access for keyboard AI.

### How often is KeyFlow updated?

The latest version, 2.0.2, was released on October 28, 2026. Updates are provided regularly to enhance features and reliability.

### What is the age rating for KeyFlow?

KeyFlow has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 2.0.2 — 2026-10-28

KeyFlow AI is now KeyFlow AI Keyboard & Writer. Fix the grammar, rewrite, change the tone or translate right above your keys. This update refreshes our App Store page; the keyboard is the same as 2.0.1.

### 2.0.1 — 2026-10-26

- Fix Grammar runs on a newer, smarter AI model and now catches typos that happen to be real words.
- More reliable reading and Replace in chat apps like ChatGPT and Claude. After Replace the panel closes, with a quick Undo.
- Dictation saves your recording as you speak and retries on its own if the connection drops. If KeyFlow ever closes mid-recording, your audio waits in History, ready to transcribe.
- A steadier recording timer in the Dynamic Island.
- iPhone Duo: the split keyboard matches Apple's layout, sits lower, and Dictation uses both pages.
- The original colours are back, and tapping outside a field closes the keyboard.

### 2.0 — 2026-10-22

KeyFlow 2.0 is a rebuilt keyboard.

• A shorter setup gets you typing on the real keyboard first. Skip it or replay it from Settings.
• AI actions now reply in the language you wrote in.
• Better English and Spanish typing, first suggestions and light/dark appearance.
• AI edits highlight exactly what changed, with Copy original. Restore is available while the field is unchanged.
• Select one sentence and fix only that.
• Incomplete AI responses are discarded instead of pasted.
• AI data sharing is an explicit choice you can change in Settings.
• Ready for iPhone Duo.

### 1.4.2 — 2026-09-19

Fixes the AI bar looking blurry and washed out on iOS 27. The chips are sharp and full colour again.

### 1.4.1 — 2026-09-16

Lifetime keys now save and validate correctly.
Pro subscriptions work without an OpenAI key.
Restore purchases added to Settings.
AI results now appear as they are written.

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## More apps by Lumozz

- [Gist AI Summaries](https://appshunter.io/ios/app/gist-ai-summaries/id6788900635)

All apps by Lumozz: https://appshunter.io/developer/1875045168

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*