Free · no signup
Free tools for Lovable apps
Quick public checks you can run on any app before you launch or share it. Each one explains what it found and gives you a prompt to fix it in Lovable.
Lovable security checker
Leaked secret keys, exposed .env files, source maps and security headers.
Open toolLink preview checker
How your link looks when shared on Google, X, LinkedIn, Facebook and Slack.
Open toolCORS checker
Whether other websites can read your app's responses or use your visitors' logins.
Open toolDNSSEC checker
Whether your domain's DNS is signed, so visitors can't be sent to a forged server.
Open tool404 page checker
Whether missing pages return a real, branded 404 that helps visitors back.
Open toolRun these checks every day
SaaS Sentinel runs the security, branding and 404 checks every day for each app you monitor, and alerts you when something changes — alongside health, costs and margin.
Start your 14-day trial, no card required