I really wouldn't buy that, not only is it poor quality it looks radically overpriced and unless your plugging into the analogue input of your phone...incompatible...and even then you may struggle to monitor the beats and your voice over the headphones without some sort of adaptor
Assuming you have an iPhone, I would be looking at something like this...https://focusrite.com/ios-audio-interfa ... olo-studio
But to be honest, recording vocals over beats on a smartphone, while possible is unlikely to be a hugely satisfying experience, do you have a desktop or laptop you can use?
In which case the above still works but I would also look at the Focsurite Solo Studio, or the Rode NT1-Ai - they are ALL cheaper than the link you have provided above, are made by 'proper' pro audio manufacturers, will come with decent bundled software and will be of a much higher quality.
As others have said - you don't need the filter, just use duvets (or record infront of some thick curtains!) but each of those options give you enough financial room for a mic stand etc...
If all that is too scary, (and you need Android support) then consider building something around this..https://www.amazon.co.uk/Multimedia-iRi ... th=1&psc=1