Powered Up

From there you can accelerate or brake and activate tons of sound effects. With the Freight Train set, for example, you'll be able to play 9 distinct train sounds. Lego Powered Up is a fun app that's a great companion for any of the LEGO sets listed above. Your little ones are sure to love playing with their LEGOS and making them move thanks to this app. Now you can remotely control your LEGO creations and they'll play real-life sound effects back to you.