Really nice quality board, Really nice quality pieces, The app is just uh... Not quite ready. Bluetooth only stays connected while the app is open, and not yet able to play online or reliably run a firmware update without something crashing. Despite the app being almost unusable for me at the moment though I still say this is worth the 4 stars, since the only existing issues are things that will theoretically/hopefully fixed in the future. I really don't want to have to try to keep forcing my phone to stay open on one app to keep a game going (when games are actually playable that is) so that's definitely a major thing I hope gets changed, because it almost feels like it's not actually using a Bluetooth service at the moment.