The immersion is definitely the most valuable. Very few language apps can help you learn idioms or slang, even if they are in common usage. Even if you were le

The immersion is definitely the most valuable. Very few language apps can help you learn idioms or slang, even if they are in common usage. Even if you were learning English, you are more likely to learn "that is very good" rather than "that is amazing" or "sweet!". I think we also underestimate how much immersion forces us into thinking in the other language when we are surrounded by it, even passively. If you use English all the time and learn German for 2 hours per day, it's not even close to what it would be like living in Germany, even if you were speaking English there.