Pros: A lot of gain* (see cons), good value for money at £39, USB-C shares power and connection so you can plug it in and use it with iPhone which is cool, phantom power, ability to capture camera audio, built in vocal enhancing effects processed on device*
Cons: Gain is not clean after a certain point. For it to work with SM7B there is technically enough gain but at near maxed out I get hissing on my voice or digital clipping if I push it too far, so I bought a cloud lifter and problem went away. if you have a loud speaking voice / for singing this may not be a problem. Build quality is just ok. I don't think the pre-amp is anything special. On device effects don't sound that great compared to something professional like Izotope Nectar
At this sub-£40 price point though it is great value though (Focusrite RRP of £150 is bananas) so if it fits the bill go for it, just don't expect best in class