Getting a lot of questions on this topic so let me do a Q&A format.
Q: Does the child get notified when monitoring is active on their device?
A: On iOS, yes, in most cases. The MDM profile that most serious monitoring apps require shows up in Settings under General > VPN and Device Management. There is no way to hide a properly installed iOS monitoring profile from the device settings. On Android, it depends on the app and the method used. Apps installed via the standard Play Store typically show in the app list. APK-installed apps with stealth mode enabled may not show in the default launcher but will still appear in Settings under Apps if the child looks there.
Q: Can a monitoring app see WhatsApp or Signal messages?
A: WhatsApp without jailbreak or root: limited. Some apps can see notification text (the preview that appears on screen) but not full thread history. With root on Android you can access the WhatsApp database file directly, giving full message history. Signal specifically is designed to prevent this. Even with root access, Signal messages are encrypted at the database level on modern versions, making extraction impractical for consumer monitoring apps.
Q: What happens to monitoring when the child’s device is on a school WiFi?
A: Device-level monitoring apps continue to function on any network. The app runs on the device itself, so network does not matter. Router-level filtering at home does not apply when they are at school, which is expected because the school has its own network controls.
Q: If I cancel the monitoring app subscription, does it remove itself from the device?
A: No, in most cases. The app stays installed. It just stops receiving updates and may stop syncing data to your dashboard. You need to manually uninstall it from the device.
Q: Is it legal to monitor your child’s device?
A: In most countries, yes, for minor children. Parents have legal authority over devices they own or provide to minors. The legal situation changes significantly if you are trying to monitor an adult child (18+) or a device you do not own. For your own minor children using devices you provide, monitoring is standard parental oversight in virtually every jurisdiction.