Bests & Worsts Reviews from Amazon

I'm giving it 3 stars (upgraded to 4) for the concept (and positive feedback from Lego). My kid (7) loves it and it is a great introduction to robotics and programming. The app is well presented given the vast set of capabilities. They did a good job forcing you to take a gradual approach to learning by "unlocking" capabilities as you learn them. That said, there are two issues that others have reported as well. The product is so new that there is no help available with a google search. The problems: 1. The program freezes after the first motion instruction. This is very annoying as you have to restart the app, and it has a long start-up time. Then it works for a few runs and starts freezing again. 2. The programming steps, represented as icons are not documented. Most are obvious (move forward, move back, etc). Others are completely cryptic. Usually you can figure it out just by trying it, but others still remain a mystery or their effect is unclear. Another peeve is that the sound emanates from the tablet, not the robot. They should have added a speaker. I have emailed Lego support on the two issues above. I'll update this review with their response when I get it. EDIT: Lego customer support responded within 24 hours with a thorough email that included a PDF with a "cheat sheet" for all of the programming blocks (a.k.a. "icons"). Regarding the freezing program issue: they claim to be unaware of it. After some testing here, I'm thinking it might be radio interference with nearby routers and cellphones. I moved to a different room and the issue virtually disappeared. I communicated this to Lego. I'll continue updating with any new information I get from them.