Harold. vs AI or Not

Harold is for writers who want real feedback before they publish. Write a draft, share it with a friend, and let them leave inline comments to the exact words they're responding to. HOW IT WORKS Write your draft in Harold's distraction-free editor. When it's ready, share it with friends directly from the app. They'll see your draft on their phone, highlight any passage, and leave a comment tied to that exact moment in the text. Harold is for essays, short stories, cover letters, speeches, newsletters, or anything else you've written that needs a second pair of eyes before it goes out into the world.

AI or Not checks if text was written by a person or by AI like ChatGPT. Paste in an essay, a cover letter, email, news article or any other text. In a few seconds you get a score, a verdict, and highlights where AI was used. Everything remains on your phone: the app has the full detection model inside it, the same one that powers aiornot.com. Your text is never uploaded anywhere. PRIVATE BY DESIGN Every check runs on your phone. Yes, the AI model lives in the app. WHAT YOU CAN DO - Check essays, submissions, and applications before you submit - See which sentences look AI-written, not just an overall number - Send text straight from Safari or any app with the share sheet - Revisit past checks, stored only on your device PRO, WITHOUT A SUBSCRIPTION A single one-time purchase removes the daily limit forever and unlocks fully offline checking. No internet, no problem.