Never used it but I’ve used “Rosetta Stone” and it is awesome for learning languages.

I’ve tried this for a couple languages. Not a fan. Doesn’t help you have a conversation The best way to learn a new language is to be in the presence of people speaking the language you want to learn

I like it. It’s fun, but probably not the fastest way to learn. I started to watch TV shows in Spanish in combination with doing Duolingo every day. Currently watching Narcos with Spanish audio and subtitles.