Computers and your phone and tablets run on a set of instructions called an "operating system" or "OS" for short. Apple iPhones, iPods, iPads, for example, run on the "iOS" operating system - others run on Google (Android) and Microsoft - Apple Mac's (computers) run on "Mavericks" etc. Each software developer builds software for a particular operating system - building for multiple systems becomes very expensive. When kik developers can afford more than app development - it should be available on the web (on a browser that is made for a computer operating system). You could send the developer an email and ask them if they have plans to develop (cross platform) versions of their messenger.