My daughter is 2 and really loves this app. That being said, as an adult, there are definitely areas that need to be worked on. The sound is inconsistent, to put it simply. Most often, I have to go into the settings, turn the sound off and back on again, just to be able to hear it. And considering the noise is a huge part of the “reward,” to have to do it over and over is a bit frustrating. Even doing so, it drops out, a LOT.Also, my darling daughter who had no idea what Star Wars is, loves the Storm Trooper avatar. I paid the 99 cents but this only gives you the avatar. She has figured out the “AR mode” and fully expects there to be a Storm Trooper! We purchased Rey as well and her AR mode is also BB-8. Please please make our purchase more worthwhile and add more AR features!!!Otherwise this app is very effective and keeps my daughter interactive throughout brushing, which before was so difficult! So thank you developers because is has really helped for it's intended purpose: beautiful pearly whites for my munchkin!