Free tools for founders

Small tools for launching a product. Free, and no account needed.

• Agent prompts - Copy-paste prompts for Claude Code, Cursor or Codex that get your site ready for AI search, SEO, email and launch day.
• AI visibility checker - Paste your website and see how easy it is for AI crawlers and answer engines to read, with a fix for each problem.
• Launch copy generator - Paste your website and get a tagline, a short description, X and LinkedIn launch posts and a Show HN title.
• Listing review - Check your tagline, description and landing page for vague wording, claims the page doesn’t back up and missing details before you submit.
• MRR & valuation calculator - Turn your MRR, growth and churn into an ARR figure, an MRR stage and a rough valuation range.