Ground Truth said the category leader on mobile is Flirtomatic, which accounted for 65 percent of the traffic for the week ended Aug. 8. Other popular sites, typically visited from a computer, such as Match.com and eHarmony, were visited less frequently, ranking at 7 and 17, respectively. Users are spending an average of 12 minutes and 44 seconds a week on the sites, but each session is short and only lasts for 49 seconds.

The increase in matchmaking on mobile likely has to do with better weather and people stepping away from their computers for longer periods of time. The summer of smartphone love does not actually refer to dating, but rather the large number of devices coming to market.