The general curve of most of the usage lines follows the general traffic flow of larger websites. Very little traffic at night, with a steep rise as the work day starts with a peak in the mid-afternoon, then a drop-off as people begin to leave work. Smartphone and desktop browser usage are fairly similar.
iPad use, on the other hand, is dramatically different. Usage dips slightly after breakfast and remains below the other devices throughout most of the day, until the evening. Then it spikes much later in the evening.
Bitly researcher Brian David Eoff:
During the weekends iPad usage between 8 a.m. and 3 p.m. is higher than it is during the week at those same hours. No other device sees a heavy increase of use during the weekends, showing that the iPad is used as an entertainment device and differs from both smartphones and browsers.Bitly also looked at the types of data consumed, but didn't see any drastic differences in behavior there. The most striking differences are in the times of use. Eoff believes it's because the iPad is "used as an entertainment device" more than both smartphones and browsers.