Applets are applications that can be used without downloading and installing. It realizes the dream of "at your fingertips", and users can open applications by scanning or searching. It also embodies the concept of "use and run", and users don't have to care whether too many applications are installed. Applications will be everywhere and available at any time, but there is no need to install or uninstall them.

For developers, the threshold of small program development is relatively low, not as difficult as APP, and it can meet simple basic applications, offline stores suitable for life services, and the transformation of low-frequency applications that are not just needed. The applet can realize seven functions such as message notification, offline code scanning and official account association of WeChat. Among them, through the WeChat official account association, users can jump between the WeChat official account and the applet.