Worked great on Android 7, fails to launch past the splash screen on Android 8. (Pixel XL)
Great improvement over the earlier SSO app. Not only does it store your tickets (so you don't have to bring the paper versions), but it now has your order history and can provide optional notifications. Just make sure you look for the "ListenBoldly" app on your Android device -- it's not called "Seattle Symphony" or "SSO" under its app icon, so it's easy to forget where to find it.