Kite Discount, Free Gift, BOGO

Once initial setup glitches were fixed by Skai and team (wouldnt show in drawer cart, if you use drawer carts), the app works great. Customer support is great and fast. When I had issue with drawer cart, they promptly fixed it. Also tweaked appearance, giving me options via a video demo after I pointed out what I would like to change.
I tried couple other apps, this ended up the one we use mainly due to fast customer service response, but also pricing and features. Give them a try.