The fonders of Kytephone Martin Drashkov and Renat Gataullin orginally set out to create a simplified interface for seniors but then switched focus to kids when they realized smart-phones where getting more intuitive. They’ve also found it poular with parents of children with autism or other developmental disabilities.
Asked why they developed it first for Android as opposed to iPhone, BlackBerry or WindowsPhone and they had two reasons:
"First, programming for iPhones was a non-starter as software developers aren't given the same level of access to Apple's operating system as is allowed on Android...Then there's the fact that Android is the most popular mobile platform in the world and there's a plethora of low-cost phones that parents can buy for their kids — Kytephone can be used to safeguard a parent's expensive phone or it can be installed on a child's first phone." -- From Vancouver Sun
Kytephone can be downloaded from the Google Play store for free.