DomainAlerter is a Registered Domain listing and expiration alert app. Currently it works with DomainPanel accounts alone.

Upon entering your login credentials in settings, the app displays all your registered domains. It sets up alerts for all your registered domains based on expiry date, as local notifications. Domains expiring within 30 days are shown at the top. Alerts are configurable for 7, 15 and 30 days prior to expiration.