"I've been looking forward to the Hidden Side sets since they were announced. I eagerly bought this set and set about building. After building I decided to download the app and see what it does. This is the problem. You need a fairly new phone that runs the ARCore software, mine doesn't at the moment. How many parents buy their kids the latest phone? I am disappointed I can't use the app as I feel I am missing out on what would make a good set an excellent one. It has also put me off buying any more Hidden Sides at the moment. The new hair/hat/hood pieces are good, hope to see more of them but the ghost dog is super cool!"