Suggest a SPY APP for my sons Smartphone (Android)

I am looking for a SPY APP for my son's Android smartphone that has advanced features. I prefer a subscription-based app over a one-time payment. The app should be hidden with NO ROOT required on my son's smartphone. The ideal freelancer for this job should have experience in suggesting SPY APPs, with knowledge of Android. The freelancer should also be able to ensure that the app is safe and secure, with the ability to provide updates as needed.
No development required
Just suggest to me the best SPY APP - should be able to hear call recordings among other features