You can study Mandarin for months and still freeze when it's time to talk. Parlita fixes that by making you speak from the first session: real conversations with an AI partner, living stories you act inside, and the words you stumble on woven into spaced repetition so they stick.
What learning Mandarin is actually like
Mandarin grammar is genuinely simple and almost nobody believes that until they see it. There is no conjugation and no tense the way English does tense, and nothing carries a gender or a plural. You put the words in order and add a word for when it happened.
The cost gets paid somewhere else. Tones carry meaning, so one syllable said four different ways is four different words, and that is an ear problem rather than a study problem. Characters are the other long haul, but reading is a separate skill from talking, and pinyin will have you holding real conversations long before you can order off an untranslated menu.