Hey King, I used JapanesePod101 on my daily commute for awhile, and it was easy to make it a habit. There's lots of audio, and plenty of back-and-forth between Japanese and English.

KoreanClass101 is produced by the same company, and they have the same format, I believe. Here's the link $1

See if hadley has a korean course learn korean braille and learn to read and write it as well as speak it. You can just go to class after you have learnt how to write it. Ask for text in e-texts and you can read on a braille display or by a screen reader. Pretty simpel if you are a language person. I am not but yeah..

It looks like Duolingo has Korean, https://www.duolingo.com/courses. The accessibility of the iOS app is pretty good with just a screen reader, so I would imagine that it would be usable using low-vision tools. It is also free to learn.

I used Rosetta Stone to learn German. It was fun and kept my interest. My son used it to learn Russian.