Perks Reminder is a free, open-source tracker for credit card benefits, welcome bonus deadlines, annual fee ROI, and loyalty program expirations. It helps people who juggle multiple cards keep track of monthly, quarterly, and annual credits without spreadsheet sprawl or bank account scraping. The 2.1 update includes a rebuilt mobile UI, PWA support, Benefit usage manuals, email reminders, import/export, and a separate loyalty points expiration tracker.