Crystal Free is an Android app developed by Keynan Software (4-12-13 shimo-meguro meguro-ku Tokyo Japan). Others apps created by Keynan Software are: Heart Trial, Glitter Free.

Crystal Free first became available on 30 Nov 2011. It is estimated that Crystal Free has been downloaded between 100000 and 500000 times from the Play Store.

Crystal Free 1.1.6b requires the following permissions:

Allows applications to access information about networks.

Allows applications to open network sockets.

Allows an application to read from external storage.