[iOS] Tsurukame - native app with offline lessons and reviews

I’ve got a question about the syncing function: if I do lessons at, say, 5pm on Wednesday in Tsurukame but only sync Tsurukame on 5pm Thursday, does WaniKani recognize those lessons done on Wednesday or Thursday?

Hurricane Laura is headed my way, and I fully expect to be without power for a bit (and therefore, likely internet). I’m wondering if I do everything in Tsurukame and sync whenever I do have power/internet again, if that’s going to interfere with my study streak, level up time, etc.