The interface is hassle-free (In my case, IOS). It connects right out of the box with my iPad Pro, a USB-C Macbook Pro, and an older Mac Pro with USB 3.0.
It comes with basic versions of Amplitube and Tonex, without extra plugins. Works well with Garage Band and the rest of apps like a native device.
The sound is decent when you hook it into your guitar/bass amp, considering is a 24bit/48Khz interface, but if you need higher quality, go for the HDX (pricier).
In the end, it is a good value for the money. It gives you the convenience of jamming with your IPad on the go using just a tiny device. Very happy with it.