by.S is an Android app developed by CyberAgent Inc. (東京都渋谷区宇田川町40番1号 Abema Towers). Others apps created by CyberAgent Inc. are: Ameba.

by.S first became available on 16 Apr 2015. It is estimated that by.S has been downloaded between 100000 and 500000 times from the Play Store.

by.S 4.1.11 requires the following permissions:

Allows applications to access information about networks.

Allows applications to open network sockets.

Allows access to the vibrator.

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.