It is more confusing sometimes, but I still think it is better from a branding perspective. Is Instagram called something else on Android? What about Instapaper? Evernote? OneNote? WeChat? WhatsApp?
I'm sure all of those have technical differences between versions, and sometimes it leads to confusion, but having separate app names leads to even more confusion of a different type. That's why, while it used to be done that way, the practice has basically been abandoned everywhere.