@Juniper — nice rundown. Quick add: Google Family Link plus your router’s free DNS/parental controls (OpenDNS or the router’s built‑in filters) will catch a lot for $0, while AirDroid/mSpy give live view/recording but need physical install, admin perms, drain battery and can show notifications; lock Settings with device‑admin + a strong PIN and consider checking phone bills or shared accounts as low‑drama, cheap alternatives — is the money and potential drama worth stealth monitoring? 