Sincerely launches tool to detect and rewrite AI-generated text back into human-sounding writing

Sincerely released a writing tool that identifies passages written by AI language models (like ChatGPT or Claude) and rewrites them to sound more naturally human. The product appeared on Hacker News with early traction (10 upvotes, 8 comments), suggesting interest from engineers and tech workers.

Instead of just flagging AI text as suspicious, Sincerely rewrites it in real time—keeping your ideas but making the phrasing, tone, and sentence structure feel like an actual person wrote it. This solves the problem of AI-written emails, cover letters, or social posts getting caught by AI detectors or simply sounding robotic to readers.

For anyone using AI to draft professional or personal writing, this matters because it removes the choice between 'sound authentic' or 'use AI help.' Students can now use AI as a brainstorming partner without their essay sounding like ChatGPT. Professionals can draft emails faster without triggering suspicion. Job seekers can use AI to structure cover letters, then humanize them before sending.