For all Android devices, please use this link to the Google Playstore where you can download the app: https://play.google.com/score/apps/details?id=air.nn.mobile.app.main&hl=en
If you are using an iOS device, please follow this link to the iTunes Store: https://itunes.apple.com/de/app/neuronation-gehirnjogging/id821549680?mt=8