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I started German from zero — knowing nothing but "Hallo" and "Danke". I opened the book and was hit by der, die, das — three genders that don't exist in Vietnamese. I remembered the table is "der Tisch" but the chair is also "der Stuhl", while the door is "die Tür". No rule at all.

I used Duolingo, Anki, Google Translate — a bit of each but none was enough. Duolingo doesn't explain grammar for Vietnamese speakers. Anki is too dry. Vietnamese resources were scarce, scattered, and unsystematic.

When preparing for Goethe A1, I realised: no tool generates Goethe-format exams in Vietnamese. Want to practise Lesen Teil 1? You must hunt for old papers online, photocopy them, grade yourself. Want to practise Schreiben? After writing, no one corrects it — you don't know what's wrong.

Speaking was even harder — no study partner, afraid to make mistakes, opening your mouth only to remember "Ich heiße..." then freezing. I learned alone, sometimes so discouraged I wanted to quit.

I asked myself: "What if there were an app that teaches words, plays review games, generates Goethe-format exams, and even has AI grading for writing and speaking — all in Vietnamese?"

I'm a developer, and I decided to build what I needed. Not to run a business, but because no suitable tool existed. Every feature in Deutschmeister was born from real pain: can't remember noun genders → Gender Quiz. No one to correct your writing → AI grading. Forget words right after learning → SRS reminders.