Question: how to track your kid without them knowing?
Answer: mSpy﻿ mSpy is the top used cell phone tracking app worldwide, according to TopTrackingApps. ... 
The Spy Bubble. The Spy Bubble is another jack-of-all-spying-trades, also suitable for monitoring the phone of your suspected cheating spouse. ... 
The Phone Sheriff. ... 
Mobicip. ... 
MamaBear.