Soli Sandbox is a free Android app developed by Research at Google, available exclusively on Pixel 4 in select countries. It falls under the category of Utilities & Tools, providing a way to connect your web prototypes to Soli interactions.

With Soli Sandbox, you can create a prototype with your favorite tools and use touchless swipes, taps, and other gestures through the Soli Sandbox app. This app allows you to set your prototypes in motion with Soli gestures, providing a unique and innovative way to interact with your prototypes.

It is important to note that Soli Sandbox does not enable the creation of production Android apps. Also, Soli functionality is only available on Pixel 4 in the US, Canada, Singapore, Australia, Taiwan, Japan, and most European countries.