I wish ios had insights (and controls) like this.

So many apps have telemetry and data collection and notifications that eat up your battery and bandwidth for business (no good) reasons.

Can't you effectively check that through the background activity time in the battery usage overview?

I don't think that tells you anything except gross offenders.

I ran this app call Adblock which creates an on-device VPN (checks dns request)

Found for example the kindle (or audible?) app still does telemetry even if cellular data is turned off (to a2z.com)