A quicker way back to your titles
Open Supernova in the browser you normally use for movies and series. If its menu offers Add to Home Screen or Install, follow that option to create a shortcut. Otherwise, save a bookmark. Either approach brings you back to the same catalog without a second registration.
On an iPhone or iPad, check the browser's share menu. On Android, check its main menu. Exact labels depend on your browser and device, so a missing installation option does not prevent ordinary browsing.
About APK searches
This website does not supply a native Android APK. Supernova is a name used by several unrelated products, so an app result with that word is not automatically an application for this catalog. Browser access is the supported route described here.
Keep your list when you switch
A shortcut does not automatically copy a list from another browser. Use list backup before changing devices or clearing site storage. For watching on television, continue with the selected service's supported app. Read the television setup guide.