I’ve used several apps from different airlines around the world and this is by far the worst I’ve used. Two of us were traveling together. After several attempts, my friend successfully checked us in via SWISS . No data regarding that success showed in SWISS , so we confirmed online via a laptop and saw we were set. An hour later the boarding passes showed up in my app but never did on his. Reviewing my own data I realized very little of my personal data had been saved in SWISS , including phone number and passport number. I entered the passport number at least 3 times prior to it remaining. For our return trip, he successfully checked us in. We received e-mails showing this, bit the boarding passes never showed up in SWISS for either of us this time. As a computer programmer I know that none of these functions are rocket-science, so I whole-heartedly think this app Air, which has an amazing airplane and outstanding in-flight service, should be ashamed of SWISS, and could hire a college intern to fix things.