Thanks! Yeah, I definitely think immersion listening can really help and I've used it a bit (subs2srs and audio books), but sometimes it can be used as a crutch to avoid speaking. Your app looks really cool and love that you incorporated SRS. Anecdotally, the hardest thing I've seen with my SO and I is that we end up switching back to english as we aren't disciplined when practicing together (even when in the other country itself lol)