If This Then That, also known as IFTTT, is a freeware web-based service that creates chains of simple conditional statements, called applets.
An applet is triggered by changes that occur within other web services such as Gmail, Facebook, Telegram, Instagram, or Pinterest.For example, an applet may send an e-mail message if the user tweets using a hashtag, or copy a photo on Facebook to a user’s archive if someone tags a user in a photo.In addition to the web-based application, the service runs on iOS and Android. In February 2015, IFTTT renamed its original application to IF, and released a new suite of apps called Do, with which users can create shortcut applications and actions. As of 2015, IFTTT users created about 20 million recipes each day. All of the functionalities of the Do suite of apps have since been integrated into a redesigned IFTTT app.