Snapchat
It won’t let me be on there it keeps jumping back to my Home Screen
I'm sorry to hear about your issues with Snapchat. This issue has been reported multiple times this afternoon, it sounds like there is an issue with Snapchat's latest update. You should contact them for further support.
You might also find the following article helpful:
If an app on your iPhone or iPad stops responding, closes unexpectedly or won’t open – Apple Support