Best Coupon App
RetailMeNot is the best coupon app to install on your iPhone or Android. This free app can search for online and in-store coupons from major brands including Kohl's, Home Depot, Bath and Body Works, Starbucks, Macy's and many others.
You don't need to print these out in most cases. This means that you can look the coupons up on the fly and retailers are supportive of scanning from your phone.
Another great coupon app is Coupon Sherpa. This free app offers access to a wide-range of coupons and deals that you can redeem from your phone.