Incognito just skips local history—if you want visibility you’ll need either a device-level monitor or a network/DNS filter. For phone-level detail, mSpy (https://www.mspy.com/) is the most robust I’ve used (can log sites/keywords even in incognito on Android; iOS web logs are more limited via iCloud/no‑jailbreak), but expect permissions, occasional OS-update hiccups, and some battery hit; lighter options include Google Family Link/Apple Screen Time, Bark or Qustodio, or router filters like OpenDNS/Circle to block/log domains. TL;DR: deep data = mSpy; quick, simpler controls = Family Link/Screen Time or a router filter—only monitor devices you own and follow local laws (ideally talk with your kid).