Does kik use data in this situation?

So i'm new to iphone and don't really understand data yet. Anyways, so I have kik on my iphone. I know if I don't open it without Wi-Fi, I won't get charged for data usage. But if someone texts me/ get a notification, will I be charged if I don't open the app? Like will the notification charge me?

The notification won't charge you but in order to get that notification, the iphone runs in the background to "push" data so you are still using a small amount of data. If you have any kind of data plan you will be fine, if not you can stop the apps from getting data in the settings section.