The App "Rollei AC 420" is a program which allows you to remotely control your Rollei Actioncam 420. Not only can you stream a live view of the camera, you can also trigger pictures and videos or change the settings of your device. Furthermore you have access to the recordings which have been saved to the memory card. You can view these directly from your smartphone or tablet or you can share them with your friends and family via email or download.