Enhancement request: Many lessons offline
I love this tool when I have a data connection, but it would be really, really great if I could do many lessons while in offline mode. My business has me travel from time to time and I can either kill my brain with movies, or I can study a language, and a few hours of study would be pretty awesome. Doing the exact same lesson over and over, especially for no additional experience points, is really not that exciting.
I think it would make sense if this could be configurable, so on phones/tablets/devices where folks want to use this, they can enable it and have a few/dozen/more lessons saved up ready to go, then sync can happen after a connection is restored. My phone has tons of storage so that's not a concern for me, but checking on this might be useful for some with limited space.
I'd be much happier about paying to disable adds for a month (recent nags) if this feature were implemented; I'd also be willing to partially sponsor (gofundme/kickstarter) this feature if somebody wanted to do it.
I would like that too, for long trips. I find it frustrating that you have to connect to wifi before ending your session on mobile. Maybe on your trips you could try reading literature in the language you're learning?