Easy to use, support is amazing with quick answers when you have any questions about how something works or what it does! Very easy to build out your app quickly without having too much code written by hand at first sight (as in other frameworks). Some of our features took us longer than expected so we could not get new users as fast as needed but that's just because they are used only from time-to-time apps where performance isn't very important until now :) I don’t think there can be anything bad said regarding this one - if all goes well no problems will arise while using EmberJS! We implemented an eCommerce solution which helps companies sell their products online directly through its site instead purchasing them via external websites like Amazon etc., The main problem was implementing complex product catalogs easily accessible across multiple devices including mobiles / tablets/ PCs.