iDisplay is described as 'Turn your iPad/iPhone or Android tablet or smartphone into a convenient side monitor for your Windows or Mac desktop. iDisplay is a universal app specially optimized for iPad, iPhone, iPod Touch, and Android devices screens' and is a screen mirroring app in the education & reference category. There are more than 10 alternatives to iDisplay for a variety of platforms, including Windows, iPad, Mac, iPhone and Android apps. The best iDisplay alternative is Spacedesk, which is free. Other great apps like iDisplay are Chrome Remote Desktop, Deskreen, Tab Display and Duet Display.