Through home Wi-Fi you can see domains, not searches. A router log or a DNS filter records "google.com" and "pinterest.com" with timestamps; it cannot record "how to hide an app from my parents", because that text is inside an encrypted connection.
What a home network can genuinely show:
- Which devices connected, when, and how much data they moved.
- Domain-level browsing, if the router logs DNS or you point DNS at a filtering service (NextDNS, CleanBrowsing, Cloudflare for Families).
- Blocking by category, which is often more useful to a parent than history.
What it cannot show: search queries, page contents, messages, or anything inside an app like TikTok, Snapchat or Instagram — those are encrypted end to end or pinned, and on modern phones much of the traffic goes over carrier data rather than Wi-Fi anyway.
The practical parental setup is DNS-level filtering rather than surveillance: set the router's DNS to a family filter, add the child's devices, and you get blocking plus a domain log without reading anyone's private messages. It survives app reinstalls and cannot be turned off from the phone.
Where our app fits. Ultimate Phone Spy runs on Android 4.0+, Windows and macOS and reports device-level browsing and app activity (features), which is deeper than a DNS log but needs the app installed. Network filtering plus device reporting covers more than either alone.