If you've got young children or teenagers, you know it can be hard to see what they do online. Do they have Snapchat, WhatsApp or Facebook Messenger installed on their phones? Do you even know what those apps are?

Or have you seen your children hiding their phone screens as soon as you walk into the room? If so, then they're probably concealing something from you and you definitely need one of the best parental control apps.

Install this hoverwatch spy app for free on your child's smartphone. This is the best parental control app for Android. This app can help you find a child's physical location or tell you if the child isn't in school during school hours, rivaling the abilities of the best GPS trackers for kids.

They can tell you to whom your kids talk online, can schedule and limit kids' internet-access time and can block inappropriate websites.

Talk to your children about how to act online and to be wary of uncomfortable situations. Listen to them if they think your approach is too heavy-handed. And be clear with them that you'll be monitoring what they do online.