The investment of La Presse +, an iPad-only app from Montreal’s La Presse newspaper, is a big one: $36 million (about $40 million Canadian) and roughly 100 new staffers ranging from programmers and developers to a small fleet of videographers. But it is other numbers La Presse+ is reporting that have jaws dropping — some 435,000 downloads in the app’s 11-month life with engagement times of close to 45 minutes with the weekday editions and edging to 70 minutes on weekends. Then there is the really big one: 28% of LaPresse’s overall revenue now comes from one app that is only available on iPad.