The Opti Software Subscription includes access to two iOS Mobile Apps, Opti Train and Opti Brain. The two mobile apps can be found and installed in the Apple App store on your device by searching for Opti Train and Opti Brain. To access the apps you will simply login on your device with your Opti Brain username and password that you will set up while you check out and pay for your Opti Software Subscription. To use the mobile apps you must have a Muse brain sensing headband. If you do not already have a Muse headband please purchase our Opti Software Subscription With Muse instead and Opti Brain will ship one to you.