Use Astrylix from your home screen
Astrylix is a website. Supported browsers may let you add it to your device home screen.
iPhone and iPad
Open Astrylix in Safari, use the Share menu, then choose Add to Home Screen if that option is available.
Android
Open Astrylix in Chrome and use the browser menu to choose Install app or Add to Home screen when offered.
Menu labels and availability depend on your browser and operating system. Offline access is not provided.