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You can proofread and rewrite text on your iPhone without sending a word to the cloud. Scribe, in Off Grid AI Pro, underlines spelling and grammar as you type and rewrites any text with a model running on your phone. Fix a typo with one tap, or turn a rushed message into a clear one before you send it.
It works in Off Grid AI as you type, and in any other app through the Share sheet.
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What you need
- Off Grid AI 0.0.124 or later on your iPhone, from the download page.
- Off Grid AI Pro. Enter your licence key in the app and tap Activate. Pro is $34.99 once, a limited-time price down from $119, or $7.99 a month, for up to 5 devices.
- A text model for rewrites, downloaded in Models. Spelling and grammar checks work without one.
Step 1: Fix mistakes as you type
Start typing in a chat. Scribe underlines spelling and grammar mistakes as you go, checked on your iPhone with no network.
Put the cursor on an underlined word and a bar appears above the keyboard with up to three fixes. Tap one and the word changes. Tap the book to add the word to your dictionary, or the × to ignore it.
Step 2: Improve a whole message
Select the text you want to change and tap Improve in the bar. The Improve screen opens with your text at the top.
- The quick fix comes first, marked with how many mistakes it fixed, for example “5 fixed”.
- Then your model writes a better version, on your phone.
- Pick what you want under Change: Improve, Clearer, Shorter, Longer, Fix grammar or Persuasive.
- Pick a Tone if you want one: Formal, Casual, Friendly or Confident.
- Tap Another version for a fresh take, then tap the one you like and Replace.
If your model is slow for this, Improve suggests a quicker one with a one-tap Use it.
Step 3: Improve text from any app
Writing in Mail, Messages or Notes? You don’t need to copy anything by hand.
- Select the text.
- Tap Share, then Improve.
- Off Grid AI opens with your text on the Improve screen. Pick a version.
- Tap Copy. The app says “Copied. Paste to replace.”
- Go back and paste over your selection.
What stays on your iPhone
Every check and every rewrite runs on the phone, with the model you downloaded. Scribe doesn’t send your text anywhere to be checked. If you pair your iPhone with Off Grid AI Desktop, the words Scribe has learned sync between them over your own network, so a name you taught it once stays taught.
If something doesn’t work
| What you see | Why | Fix |
|---|---|---|
| “Rewrites need a text model.” | No text model is downloaded | Download one in Models |
| No underlines | Pro isn’t active | Enter your licence key and tap Activate |
| Improve missing from the Share sheet | It’s hidden in the sheet’s app list | Scroll the apps row, tap More, and turn on Improve |
FAQ
Can I proofread text on my iPhone without sending it to a server? Yes. Scribe in Off Grid AI Pro checks spelling and grammar on your iPhone as you type, and rewrites with a model running on the phone. Your text never leaves it.
Does it work in other apps, like Mail or Messages? Yes, through the Share sheet. Select text, tap Share, then Improve. Off Grid AI opens with your text, you pick a version, tap Copy, and paste it back.
What rewrites can it do? Improve, Clearer, Shorter, Longer, Fix grammar and Persuasive, in your own tone or a Formal, Casual, Friendly or Confident one. Another version gives you a fresh take.
Do I need a model for spelling checks? No. Spelling and grammar underlines work on their own. Rewrites need a text model downloaded in the app.
What do I need? An iPhone with Off Grid AI 0.0.124 or later, an Off Grid AI Pro licence, and a text model downloaded for rewrites.
Related guides
- How to Keep Private Notes on Your iPhone That Sync With Your Computer in 2026 (Plain Markdown, No Cloud)
- How to Rewrite Any Text in Your Own Voice on Your Mac in 2026 (One Shortcut, No Cloud)
- Best Private Grammarly Alternatives in 2026 (Grammar Checks That Stay on Your Computer)
Get Off Grid AI Pro and your next message gets checked on your iPhone, not on a server.