M.J.
We've tried 5-8 different screen tracking apps in the past six months. They're all awful in different ways. Some can too easily be removed by the teen, some randomly stop working, some randomly stop tracking certain apps, some slow down tech speed considerably, etc. Read the reviews out there and take note of the negative ones. We found the negative ones to always be spot on in the end. We gave up. I did see Apple has a new tracking option; we may look into that, but honestly, we're so fed up at this point with what's out there. No one has a great product.
ETA: We didn't think our son was on social media, either. Surprise! He was quite active on Instagram and Snapchat.