Watermargin is an Android app developed by FourThirtyThree Inc. (서울시 강남구 삼성로104길 22(삼성동)). Others apps created by FourThirtyThree Inc. are: Battle of Arrow, Monster Super League, Seven Guardians.

Watermargin first became available on 21 Nov 2013. It is estimated that Watermargin has been downloaded between 1000000 and 5000000 times from the Play Store.

Watermargin 4.0.1 requires the following permissions:

Allows applications to access information about networks.

Allows applications to access information about Wi-Fi networks.

Allows access to the list of accounts in the Accounts Service.

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 access to the vibrator.

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

Allows an application to write to external storage.