AboGuard auto-detects free trial signup pages on 100+ sites and reminds you before you get billed. Pick ignore, remind, or auto-cancel mode. One-click cancellation letter generator. 100% local, no account needed, no bank access, GDPR-compliant. Built after finding 700 EUR/year in forgotten subscriptions. New in v1.1: Smart Alternatives tab suggests 35 legal cheaper alternatives to 13 expensive services.