I can see you're really upset with this... :laugh: Still I'm facing this as a business decision, and this has nothing to do with the size of the company. For instance, Switzerland is known for it's banking system, being UBS[^] one of the biggest banks in the world. Despite of this, their mobile application is only available on the Apple Strore and Google Play. Why? Probably because of the same reason as Cotsco... their Windows Phone customer base isn't big enough to worth the money + trouble. The money isn't only for development but also maintenance. As you said, they are big companies, this one specially dealing with freaking insane bank accounts, therefore apps in a "one way fits all" aren't an option. They should be native, robust, reliable and secure apps which leads to... Expensive! As for customer perception, it's much worse to have a bad application than no application. Also in the long run things keep being expensive as on each new release all apps must be designed differently to cope with the different platform layout logic, updated, tested and pass all quality checks, etc... Looks simple at the beginning but if you dig it a bit adding a new supported platform to an app actually involves a lot of money that even though these companies certainly have, they just don't see the need to spend. Bottom line, it isn't just because a new type of phone/OS comes out that all companies must support it. It might be the best OS ever made by the Binary God, if the customer base is small, other platforms get development priority... Cheers!