Built a tool for people who post on X. It parses your old posts, shows you what actually worked (hook, format, length, timing), then writes new drafts using your own past posts as the reference instead of generic AI slop. Pricing is one time credit packs, no subscription. Starter pack is $4. New users get free credits on signup. 3 days in: 30 signups, a few hundred posts parsed, $0. I messaged about half the signups for feedback. Most of it was positive. Still nobody paid. What I already...