I leave for Japan in three months, so I’m trying Rosetta Stone

TL;DR: Mashable readers can save $219 on a Rosetta Stone lifetime subscription while codes last, but fewer than 100 codes are available at this price.In three months, I’ll be in Japan, and I’d really like to avoid the whole ‘stereotypical tourist’ vibe. I’ve always heard that Rosetta Stone is one of the best language-learning apps, but I’m not sure if it can actually help me learn some Japanese in time for my trip. There’s only one way to find out &mdash