Small, but a fast-growing platform. Support is amazing. Every time I'd had a problem they answered almost immediately. In the beginning, the platform was super confusing but they've improved many things.
Cons
App they have isn't an app. You click on the app and then you can see www.livexp.com on the top of the screen, so basically they redirect you to the web page when you open the app. Therefore, it's not as fast as a real app could be.