I prefer Prime Video because it has better sorting options, but the Freevee app is good if you don't want to see rent/buy options. The links below are for the Prime Video app, but there's also a dedicated Freevee app. Like most movie apps, Freevee is also available in a web browser and as a TV app. On the free page are also unique collections like Movies of the month, Culture Rated | Black voices, and Hispanic heritage. But within each list, you can further refine the results by subtitle language and genre.
There are the typical categories for helping you find popular and recently added movies, plus genre-specific lists for comedies, dramas, etc.
Something I especially like is how these films are organized. It might not seem like Amazon Prime Video belongs in this list, but there's actually an entire section of the app that lists only the movies and shows Amazon lets you watch absolutely free.
