A mom in Texas just invented an app that guarantees your kid calls you back. It locks their phone until they call you, they can only call you back or call 911.

Every kid who's begged their parents to buy them a phone has used the, "I can call you so you know I'm safe" line. And every parent who fell for it learned their kids are actually terrible at checking in.

So you're going to love this as much as your kids hate it. A mom in Houston, Texas named Sharon Standifird has invented an app that forces your kid to call you back.

It's called Ignore No More. And when a parent calls their kid and the kid doesn't answer, the app locks their phone and only gives them two options: Call their parent back or call 911.

So they can't text, play games, or use apps until they call their parents back and get the unlock code.

Ignore No More costs $1.99 but it's only available for Android phones . . . Apple doesn't allow apps to lock up the phone the way this does.