I've discovered a way to get a list of the coupons you've loaded to your card so you can take the list to the grocery store with you and check prices!
Once you've selected all the digital coupons you want to add, switch screens and go to the "Shopping List" feature on the app. You'll see that all of the products you have a coupon for are on this list. Simply hit "Manage List" at the top of the screen, and you'll come to a screen where you can email the list to yourself! Just print it out and you have a nice list to take to the store.
I've found multiple times that the coupons for Shoprite brand products have yielded free product - so it's definitely worth loading them and checking the shelf price.