While not technically an app, the free Language Reactor Chrome extension, formerly called Language Learning with Netflix, can be helpful on your journey to becoming multilingual. Install the extension and click the icon to launch the catalog of movie and TV show options. You do need a Netflix subscription, though, which you can grab for $8 per month or $18-25 per month for premium, ad-free tiers. 

Once you launch the catalog, you can pick from hundreds of titles that use movies on Netflix to help teach different languages. For example, if you want to work on your Spanish, select the language in the dropdown menu, along with the country where you’re using Netflix. Then, the extension will generate a list of titles to which it can add Spanish closed captions. To watch one of the films, just click the red “Watch on Netflix” button. Depending on the language you want to learn or what country you’re watching from, you might have fewer titles to pick from.

As the series or movie plays, two sets of subtitles display at the bottom of the screen. One set is your native language and the other is the one you want to learn. The words highlight as they’re spoken, like a karaoke sing-a-long. You can listen to the dialogue phrase by phrase, pause and replay as needed, access a built-in dictionary, and more. Depending on the show or movie you’re watching, you’ll be able to translate your closed captions into more than 50 languages.

If you want to use Language Reactor for more active learning, it also has a chatbot, fun videos and a digital phrase book on its website.