FOSSLingo is an alternative to traditional language learning apps that is Private, Community Maintained, and Open-Source under the AGPLv3 License. I, iddu01, started this project, simply because I think language learning should be free for all.
If you are a developer, UI/UX designer, artist, able to contribute voice samples, fluent in any language, or anything like that, please contribute to FOSSLingo! Even if you have never contributed to Open-Source, I'm here to help! You can reach out at aadit@iddu01.me