Mobile apps must be available for use within a second or two at most every time they are run. If not, we just won’t use the app. On the other hand, mobile websi

Mobile apps must be available for use within a second or two at most every time they are run. If not, we just won’t use the app. On the other hand, mobile websites can commonly take 10 seconds to become readable. So, why are apps slow? Because they don’t need to be fast unless users will not use them otherwise.