Free Tools for Founders
Practical tools built for indie hackers and early-stage founders. Launch readiness, tech stack detection, SEO audits, and SaaS metrics calculators — all free, no sign-up.
Launch & SEO tools
Check your DR powered by Ahrefs and embed a live badge on your site as social proof. Premium users get an auto-updating badge that links back with a dofollow.
Is your product page ready to go public? 20 checks across social sharing, trust signals, product clarity, and SEO. Know exactly what to fix before you launch.
Paste any URL and instantly see what the site is built with — frameworks, CSS, hosting, analytics, payments, and more. Detected from public signals.
Audit any landing page for on-page SEO issues: meta tags, headings, images, structured data, and more. Instant results, no sign-up required.
Check if your site can be embedded in an iframe. Detects X-Frame-Options and CSP headers, shows the exact blocker, and gives you a platform-specific fix ready to paste into Claude or Codex.
SaaS metrics calculators
Real-time calculators for the numbers that matter — MRR, churn, CAC, LTV, runway, and Rule of 40.
Calculate Monthly Recurring Revenue, ARR, Net New MRR, and MoM growth rate from customer count and ARPU.
Calculate monthly and annual customer churn rate, MRR churn rate, and LTV impact from your customer loss data.
Calculate blended Customer Acquisition Cost, CAC by channel, and LTV:CAC ratio from your sales and marketing spend.
Calculate Customer Lifetime Value, gross margin-adjusted LTV, LTV:CAC ratio, and CAC payback period.
Calculate months of runway, net burn rate, and default date from cash balance, burn rate, and monthly revenue.
Calculate your Rule of 40 score — the SaaS benchmark that combines revenue growth rate and profit margin into one number.
Built for founders, not enterprises
Once your product passes the checks, enter the LaunchBuff fortnightly tournament — community votes, a winner's badge, and a permanent SEO listing.
Enter the Tournament