Warning: Uses a LOT of data
Nihongo no Mori lessons are great - but there is *no way* on the app or website to control the quality of videos: a 9 minute video eats up half a gigabyte of my data (I tested it tethered to my phone as well). There is absolutely no need for 4k quality on my tiny phone screen. If there were an option to lower quality to 720p for example the website/app would not lag as often I'm sure. 5* if this would get fixed.