Open Lingo - A free to use language learning app, teaching: Korean, Japanese, French, and Spanish
My brother and I have been working on Open Lingo for a while, after deciding Duolingo did not offer good vocab & grammar practice, and was really expensive.
We're a transit themed, SLA science (second-language acquisition) based language learning app. Our courses are authored with word frequency in mind so you can learn words you're likely to hear.
