Four Letters is an Android app developed by PIKPOK (Level 7 Willbank House 57 Willis Street Wellington New Zealand 6011).

Four Letters first became available on 19 Mar 2015. It is estimated that Four Letters has been downloaded between 500000 and 1000000 times from the Play Store.

Four Letters 1.4.2 requires the following permissions:

Allows applications to access information about networks.

Allows applications to open network sockets.

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