Built this after finding $340/mo in subscriptions I had forgotten about.

  Scans your inbox via IMAP, detects 40+ services
  plus unknown recurring charges via PayPal/Stripe
   passthrough. Shows start date, next renewal,
  trial end date, cancellation date.

  v0.5.0: macOS menu bar app with color
  indicators, multi-provider support (Outlook,
  Yahoo, iCloud, Fastmail, ProtonMail, custom
  IMAP).

  Everything runs locally — no data leaves your
  machine.