This one’s for the ladies parents out there. You know how you hand your iPhone off to your kid when you’re all waiting for the doctor? Or slide your iPad to the backseat for those long drives to Aunt Josephina’s house? If your kid is App Store savvy – and what kid isn’t, these days – they can rack up quite a bill installing apps that look cute to them but cost you real money. They can even wreak havoc with the simple tap-hold-wiggle dance, deleting your precious apps from your iOS device faster than you can say, “Do I need to turn this car around right now?!”

Luckily, there’s a simple, built-in way to prevent this from happening. Here’s what to do.

Sure, it’s easy to delete apps from the iPhone or iPad. Simply tap and hold on any icon, see the wiggle dance, and tap the red X button. But sometimes you’ll want to make a choice about which apps to delete based on more objective criteria than, “meh. I dont’ want this game anymore.” Like when you run out of room on your iPhone, for example. How do you know which ones to dump? Today’s tip should help.