Tobii Sono Flex is available for iPhone, iPad, iPod Touch, and also on PCs and speech generating devices running Tobii Communicator. Download your version on the iOs App Market. You can also download a 30 day free trial of SonoFlex for Tobii Communicator.
Sono Flex is notavailable for Android devices. There are some websites that claim to have Sono Flex available for Android. Please do not download that version as it is not functional and has not been approved by Tobii Dynavox.