Reminders is an application for iOS and OS X that allows you to set notifications for yourself and create to-do lists. Quickly sync and create reminders from voice assistants, email, task managers, and more — with Applets. This service requires the IFTTT app for iOS.

Google Calendar is a free time-management web application offered by Google. Turn on Applets to add the most important information, right into your calendar, automatically — and get custom notifications about the events that matter the most to you.