Start with the website, without an installer
You can open M4uHD in a browser, search the movie list and save titles straight away. Nothing needs to be installed to use these catalog features. If you want a quicker way back, save a bookmark or use your browser’s home-screen option when it is available. A shortcut opens this website; it does not download a movie library to the device.
The namesake app is a different product
The M4uHD AI Movies & TV listing describes itself as an unaffiliated application for AI-created films. Its description specifically separates it from the historical M4uHD website. Do not expect an account, a saved list or a film recommendation from one product to transfer to the other simply because their names look similar.
Android, iPhone and Android TV
An APK is an Android installation package. It is not an iPhone installer, and phone compatibility does not automatically mean an app is comfortable to use with a television remote. Check the named publisher and supported device when comparing native applications. This site does not provide an APK file or claim a package elsewhere is its official release.
For the catalog on a larger screen, use the Smart TV and desktop guide. For an offline viewing question, see downloads. Those are different tasks: installing an app, saving a website shortcut and downloading a viewing edition should not be treated as three names for the same thing.