IPhone apps that earn Amazon gift card?

Ok, currenly i'm using AppTrailers, Appjoy, Appbounty, FreeMyApps, Bamboo Waller (Juno wallet), Feature Point. I'm searching more of these apps to earn me some amazon gift card. If there are any more that you know, please comment below.

I've tried apps like freeappslots, but i'm not so interested in that app, so if you know any more, please tell me.

Added (1). I want the apps that you download apps or watch the ad. To earn points, and use the points to exchange for amazon gift cards.

I'm trying to downgrade my iPhone 4S 6.1.3 to 6.1.2?

I tried changing to host server code but its still not working.
Is there any programs i could use to downgrade?
I've been working so hard trying to find a way to jailbreak my iPhone 4S 6.1.3.
I also used to TinyUmbrella to see of i had any shsh blobs and i did for 6.1.2 so i don't know why it isn't working?

Is the iPhone 5S any different from the iPhone 5?

I know it's not out yet, but I'm deciding if it's worth waiting until september to buy it. I've chosen to stick to the classic white colour. From all the rumours and information and so on, do you think it's any different from the iPhone 5 and do you think it's worth waiting for?
I'm a teenager by the way, so I might be a LITTLE impatient and eager.
Haha!

Iphone 5? Is it worth upgrading?

To the iOS 7 update in the fall?

Can I transfer all my iphone data to a samsung phone?

Well so now is that I'm getting a samsung phone maybe a note 2 or 3. The problem is that I don't want all my data to be lost. So is there any way to transfer my data eg: contacts, photos?

How does data plans work for iPhones?

I only had 300 MB but changed to 3GB. I'm not too sure how data works. I always turn it off when I'm not using it because I didn't want to be charged for going over my data plan when I had 300 MB.
When i DON't open up safari or Instagram, vine, snap chat, etc. Or any apps that use up Internet, is my data being used?
Or also if my I message is on, is my data being used?

Does imessage use data when you're using Wi-Fi?

I have an iPhone 5 and I'm texting a person in the United States (I'm in Canada) using imessage. I also have Wi-Fi. Does imessage use data when you have a Wi-Fi connection?

For what i stands for in iPhone, iPad, and iPod?

For what "i" stands for in iPhone, iPad, and iPod?

Does sticking your iphone in rice work if its gotten wet?

I was using the B Room and my iphone 4s fell into the toilet. I grabbed it within 5 seconds. If I stick the phone in a bag of uncooked rice, will the phone start working again perfectly. And on top of that happening to me tonight my tire blew. Its been a lousy night.

Dropped my iPhone 5 in the pool?

What do I do? I got it from straight talk and somehow the insurance got messed up so I don't have any. I put it in a sealed bag of rice. How long do I keep it there? Is there anything else I can do?