How to get an iOS app without using a credit card?

I really want to get Minecraft and Infinity Blade III. But is there any other way of getting an iOS app instead of using a credit card?

Yes. What I do is I purchase and redeem iTunes Store gift cards, that way I do not have to enter credit card info and I'm not tempted to spend too much.

Yes, just use an itunes gift card from any store and you're good to go! No credit cards needed!

Yes, just buy an iTunes Gift card.

Go to Walmart check-out lane… Get a Prepaid VISA credit card and put $5 on it… Or get a $5 itunes gift card…

same applies to android and Playstore… Get a Prepaid VISA credit card and put $5 on it… Or get a $5 Playstore gift card…

I'm not responsible if you void your warranty or damage your device. Use of any information available on this answer is at your own risk, you are 100% responsible for what you do or don't do with it. All the information available on this answer is for informational purposes only.

That being said, jalibreak your iDevice, install Appcake or Installous, download the game. If you like it, then buy the game and support the developers.