Funimation is a platform to watch free animes, and has a large collection of old and new animes. After creating an account you can watch many animes with displaying ads. In order to see everything, you have to sign up.
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Right on the app’s home screen see your viewing history, new anime releases and other important things. You can view the contents by genre, alphabetical order and even by date. The animes have subtitles in Portuguese.