How to update my iphone apps that I downloaded with another apple account?

I used to use my dad's apple ID, but then I got tired of going to him for his password to download apps so I created my own apple ID without a credit card. Now the apps that i got from his apple ID need update and I can't update them without his password. Why is that and is there a way to update it without his password?

No you can;t update them without his pass, you have to delete them and reinstall them using your account.