Among other Android versions, KitKat has increased its market share to 39.7 percent, however Jelly Bean, Gingerbread and Ice Cream Sandwich have each lost some of their share and are now present on 44.5 percent, 7.4 percent and 6.4 percent of Android devices.
To remind you, Google collects these numbers by accounting for the devices that have visited the Play Store in the past week. The numbers are intended to help the Android app developers to get a better sense of the ecosystem, so they can better allocate their resources to target the most number of Android users.
