The SQR App is available to download at no cost for Apple and Android devices from the Apple Store and Google Play Store. To install the App, search for "SQR" (look out for the black and green logo).
Google Playstore Link - https://play.google.com/store/Apps/details?id=com.secureqr&hl=en
IOS App Store Link - https://Apps.Apple.com/us/App/sqr/id6446169262