Fix spelling and grammar anywhere on your Mac. Select text, press the shortcut, and the corrected version replaces it where it sits. A second shortcut strips the AI slop out of anything that reads like a machine wrote it. @Mentions, dates and times are untouched. It runs on the model built into macOS. Nothing you select is uploaded. Needs macOS 26 with Apple Intelligence.

I built this for myself. I was editing about two thirds of the Slack messages I sent, always for the same reason: accidental caps on, words mispelled like operator, restaurant or recommendations. macOS checks spelling well in some apps and badly in others. In Slack it barely works at all, and Gmail, Docs and Notes are all inconsistent.

Tidy is one shortcut that behaves the same everywhere. Select text, press ⌃⌥⌘T, and the corrected version fixes everything in one go, in place.

The second shortcut came later. I was collaborating on documents where whole paragraphs had obviously been AI generated. Selecting the guilty paragraph and pressing ⌃⌥⌘S rewrites it, ruthlessly 'de-slopping' back to it's core truth.

The app runs on the Apple Intelligence local model built into macOS. You might have to turn it on if you haven't already (nobody has by the way). Nothing you select leaves your machine, no API keys, its free fast and local.

It needs macOS 26 with Apple Intelligence. Happy to answer anything.

Half my day is copy in apps where macOS spellcheck gives up. Does it leave odd product-name caps alone, or fix those too?

Tidy

Fix grammar in any Mac app with one shortcut

Fix grammar in any Mac app with one shortcut