According to Meteor official documentation −
Meteor is a full-stack JavaScript platform for developing modern web and mobile applications. Meteor includes a key set of technologies for building connected-client reactive applications, a build tool, and a curated set of packages from the Node.js and general JavaScript community.
Web and Mobile − Meteor offers a platform for developing Web, Android and IOS apps.
Universal Apps − The same code for web browsers and mobile devices.
Packages − Huge number of packages that are easy to install and use.
Meteor Galaxy − Cloud service for Meteor app deployment.
Meteor isn't very suitable for large and complex applications.
There is a lot of magic going on when working with Meteor, so developers might find themselves limited in some way.