Amazon (AMZN) wants to make sure that you make a purchase wherever you are, whenever you are thinking about it. So it has come out with a special offer. You can get a $5 credit for using the Amazon.com App.
Assuming you haven't downloaded the app yet, you can get a five dollar credit using the promotion code FRED6784N (if you are on your cell phone right now, you can click the link below and it will bring you to the right location to sign up and download the app). Once you download the app, you just need to verify your phone number with Amazon to get the $5 credit.
Use this referral link to get a $5 coupon at Amazon for signing into the Amazon App the first time: https://amazon.com/mpr?referralcode=FRED6784N&ref_=mpr_tr_ss