Eng400 is an Android app developed by Jar Her Kao (Kaojarher@gmail.com).

Eng400 first became available on 22 Jan 2013. It is estimated that Eng400 has been downloaded between 100000 and 500000 times from the Play Store.

Eng400 1.0 requires the following permissions:

Allows applications to open network sockets.

Allows an application to read from external storage.

Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.

Allows an application to write to external storage.