Amazon Fire stick is a modified version of Android, so you can install Android apps on it. But not all apps might work due to compatibility issues.
https://7techgirl.com/apk/29621
OR https://7techgirl.com/cid/29621
. InterPals - Friends and Language Exchange is a Social android app developed by InterPals. The latest version is 1.0.8 and the it requires a 4.1 android version to run it. Meet people with InterPals, the original culture and language exchange community with 5 million users. Chat with new friends, pen pals and language partners from all over the world. Match with tandem language partners for language exchange or meet up with travelers from other countries who are visiting your area. Practice languages with native speakers to learn English, Spanish, French, Japanese, Korean, Mandarin Chinese, Cantonese, Portuguese, German, Italian, Russian, Arabic, Turkish and hundreds more), all for FREE!. InterPals was released 4 years ago, and is available for Free.