BRIO Smart Tech Sound is a free Android app designed for users of the Smart Tech Sound Engine, allowing them to customize and control their interactive toys. The app offers the ability to select favorite sounds or record custom audio, enabling a personalized play experience. Users can remotely manage the engine's speed and adjust the headlights, enhancing the overall interactivity of their toys.

The app requires Bluetooth and location permissions, which are necessary for Bluetooth Low Energy connectivity, as well as microphone access for recording sounds. Notably, the app does not store any user data, and the location feature is not actively utilized. This makes BRIO Smart Tech Sound a straightforward tool for enhancing playtime with Smart Tech Sound toys.