I started on Bunt in the summer of 2015 and was hooked within a few weeks. I love the ability to have a sizable collection without using a room of my house to store it. I also like never having a concern over the condition of the cards, and the ease in which trades can be made (no mail necessary). However, I became increasingly frustrated by constant freezes and crashes, and a lack of communication from Topps and seeming inability/unwillingness to fix or improve Bunt, and finally uninstalled it late in 2017. I've thought of getting back into it, but I would need a tablet just for that purpose. Since I paid money, I'm curious how well a person could do by playing an entire year without spending money.
Until this thread I didn't even know Panini had apps.