Right now with the iPhone application H&M store locator, get a 20% off coupon code. We’ve found this really cool promotion that will give you 20% off one item at any H&M store when you use the H&M’s free app on your iPhone, iPod Touch or iPad. You just need to download the application, if you don’t already have it, then open it and shake your device to get the 20% off hidden coupon! It’s as simple as that! And the offer is valid through September 23rd, so enjoy.