Mindroid is an AVS (Auditory Visual Stimulation device - aka Mind Machine) app for Android that provides each brain hemisphere with a signal (audible or visual) with slightly different frequencies to stimulate brain waves. With its aim to induce relaxation, creativity, productivity, and sleep, Mindroid is a great help for those fighting with stress or insomnia. The app's audible stimulation is full-featured and comparable with single-purpose AVS devices, and headphones need to be used for effective results. Visual stimulation is experimental and requires the user to match the red spots on the display with their eyes after closing them. Mindroid is compatible with cardboard goggles or compatible light stimulating glasses or sleep masks. The app is free to use with default settings, but to access all available programs, users can purchase the Mindroid Unlock for a minimal Play Store price. However, users with epileptic or cardiac symptoms should not use Mindroid.