Just go to their website and sign up for emails. The coupons are in the emails. At check out, open up your email to the coupons, and the clerk scans your coupon straight for your discount right from your phone. I don't have the app, the email coupons work just fine. I do get the flyer in the mail as well.

Since you will be visiting San Francisco, check out the huge fabric stores there. Google for their names and locations; a quilting sister-in-law visited and said the four story one, for instance, had amazing fabrics and rock bottom prices.