Review on Sphero Mini Orange App-Enabled Programmable Robot Ball STEM Educational Toy For Ages 8 & Up - Drive, Game & Code With Sphero Play & Edu App 1.57 by Djmikis Parker

I've owned a few Sphero products, and this one by far is the most useful, for my cat that is. My cat loves this thing! Don't know about the "STEM" value, but the it should really be sold at pet stores.It's easy to set up on you ipad or iphone, just install the app. No registrations, or pairing, so anyone with a smartphone could control it.I've only had a few problems,One, it seems to disconnect from the bluetooth while using it more often than you think it should.Two, it quickly loses orientation, and will go off in the wrong direction. Probably just a characteristic of the gyros, and the device being so small. It would be nice if the UI was designed to quickly put it back into orination mode, but currently, this is a little awkward.Three, like most small RF battery powered vehicles, it doesn't work on thick carpet. You'l need hardwood floors for best performance.Other than that, it's great. I would like to buy additional shells for it, but they're hard to find, and typically more expensive than buying a new ball. Please offer new shells for sale.