Is there an easier way of managing my money?

I have 2 debit cards, 1 bank account, and a Paypal. I have them all connected to my Paypal, but it doesn't let me check my card/bank balances on there. I need a place, like a website or an app on my iPhone where I can view balances and stuff for each card and bank in one place. Is there a such thing as this?

No"

PayPal and bank accounts are (obviously) entirely separate.

Your bank is likely to have an app which will let you check your account balances easily.