If you’re a current Shopmium user, here’s a change to the app’s terms of service that you need to know about. Previously, Shopmium offers could be stacked with manufacturer coupon discounts, as is the case with several other rebate apps. However, Shopmium changed its terms this week, and if you pair a manufacturer discount with a Shopmium offer, you will not receive the cash back from Shopmium.
From Shopmium’s site:
Can I use other coupons?
We do not allow coupon stacking! At Shopmium, we take into account coupons associated with your item’s final line price. If you upload a picture of your receipt showing a Manufacturer or Vendor coupon* applied to your eligible item, you will be asked to submit a different receipt within the offer’s campaign dates. Our final rebate amount takes into account any other special offers or coupons that are listed on your receipt and relate to the product. The rebate we offer cannot exceed the final price paid for the product and will be adjusted accordingly. *Manufacturer & vendor coupons do not include retailer promotions or loyalty programs.
Quotient (the parent company of Coupons.com) purchased Shopmium back in November 2015. It will be interesting to see what happens with other apps like Ibotta and Checkout 51. Last summer, NewsAmerica (publisher of the SmartSource coupon insert) purchased Checkout 51. I would not be terribly surprised if the other rebate/cash back apps follow suit at some point in the future.
SavingStar, the oldest rebate/ecoupon app of the bunch, has never allowed coupon stacking on its single item offers, though they do allow stacking on “One Or Many” (multiple-purchase threshold) offers.