This just seperates it into a secondary profile but all apps in your main profile are already sandboxed as well the only apps that are not sandboxed are system apps such as Play services. But you could use the app in a work profile(shelter) under a seperate Google account that would add a bit more anonymity. But android default app sandbox could be more secure there are other custom ROMs that do just that making the regular app sandbox even more secure.

Here is more information on how each android app is sandboxed(except Play Services)

https://source.android.com/docs/security/app-sandbox