Portable breast oump

Anyone ever heard of the freemie portable breast pump? If anyone has this I would love to hear your thoughts. I’m considering getting one for baby #2, I love the idea that you don’t have to be hooked to the wall since I will have a 2 year old to chase after this pump seems more ideal this time around. I had the spectra pump with my first which I know the freemie makes cups or something that’s compatible with the spectra but I don’t really get how that works.