Thank you for posting on our PowerSchool community!
We don't have a feature that tells how many parents utilize the app. We have submitted a feature request to the Product team on your behalf to add this feature to allow one to see how many parents are using the mobile app.
Do let us know if you have any further queries.
Elston S. PowerSchool Community Moderator Remember to give Kudos to suggestions that help you! If another user helps solve your issue, please select Accept As Solution on their post so others can see the solution, too!