I’ve had a long flight from Japan and wanted (like so many) to use the time to practice Japanese.
I use a third party app for WaniKani that just straight up downloads the entire content, so I can do all my reviews and new lessons without an internet connection.
From doing reviews while on the road, I noticed, that sometimes bunpro tells me that it lost the connection to the internet and whether I want to wait, or continue offline. I also found in the settings something like “Download all data for reviews”, which presumably downloads all the example sentences and whatnot for the grammar and vocab that are currently up for review.
I did that, which I guess also means, that upcoming reviews or perhaps grammar I want to learn might not be downloaded for offline use, but fine.
But when I then tried doing the reviews offline, it took maybe 6-7 items, before there was a “error loading sentence” and I had to quit and restart the reviews to get it to show up.
So just checking in if I made a mistake, or if offline reviews aren’t really supported. Perhaps the amount of data is way larger than Wanikani, so that it’s not feasible to download all of it. But at least the downloaded reviews should’ve worked, imo.