I am facing four long-haul flights over the next months (22h x 2 and 12h x 2) and I realized that I could try to spend some of that time studying Japanese.
My normal study methods rely heavily on internet connection: Wanikani, Anki, Genki 1 and Minna no nihongo for which I am googling words and grammar questions. With both Wanikani and Anki, you can only do so much as your reviews and new words which is not so compatible with a long-haul flight.
I want to ask if you have any tips for studying offline and/or during long-haul flights? Any good resources? offline apps? Anyone have experience with studying on long flights?