Word Hype: Vocabulary games with an AI that never leaves your phone

Hey Product Hunt 👋 I'm Sevki, I built Word Hype. I started it because every vocabulary app I tried made the same trade: either the words were useful and the app was boring, or it was fun and I was matching "cat" to a picture of a cat for the third week. Word Hype is four short games that all feed one learning system: • Word Board — you build the word letter by letter, no multiple choice • Listen & Spell — you hear it and type it, which is the gap most apps skip • Fill the Blanks — 2,400+ passages, one word missing, real context • Scenarios — a real conversation (airport, cafe, job interview) where your word choice is the answer, judged with a reason rather than right/wrong The part I care most about: the AI is a small LLM (Gemma 3 1B, Qwen 3 1.7B or Qwen 3 4B) that you download once and that runs on your phone via llama.cpp. When it explains a word or writes you a hint, nothing about what you're studying leaves the device. It also means hints work on a plane. To be precise, because "offline AI" gets thrown around loosely: gameplay and the AI are local. Accounts, leaderboards, multiplayer and ads obviously need a connection. The model download is one-time, and you can skip it entirely — the game works without any model. Content: CEFR A1–C2 pools, exam packs for IELTS, TOEFL, TOEIC, Cambridge and PTE (plus YDS/YÖKDİL for Turkish users), and interest packs like travel, tech, business and food. Interface is in 22 languages. Free with ads, subscription removes them. iOS and Android. I'd genuinely like to hear: 1. Does on-device AI matter to you as a user, or is it a builder's obsession? 2. Which mode would you actually open on a Tuesday morning? Happy to answer anything about the llama.cpp / React Native side too — that part was the hardest.