Early years swing booster seat - any opinions?

[Rpj16]

I've just bought this. Won't be using for quite a few months, its basically a travel high chair that can sit on most chairs. Was less than £15.00 and thought it would be handy as easily detaches to go with you on holiday/others houses etc (not that a holiday is on the cards, but wishful thinking!!)

We haven't got a lot of room in our kitchen, so figured this would be ideal. It does sit quite low on the chair.

Has anybody used one and found it really good/bad? It doesn't have a minimum age, so I guess I am wondering if I will need to get a little high chair as well.