Blunt
Send it a web page and get an honest, no-flattery review of the copy: what works, what doesn't, and the one thing to fix first.
Problem
Friends tell you your website or post looks great, so weak, generic lines never get fixed.
Solution
Send a URL or paste some text and it writes a memo with a score out of 10, the good, the bad, and a fix list in order. It can also pick between two versions, rework a draft line by line, or check whether your writing reads like AI.