句式 vs Redo

You know hundreds of Chinese words. So why does forming a sentence still feel impossible? Most apps hand you flashcards and hope grammar sorts itself out. It doesn't. You end up with a head full of vocabulary and no idea how to string it into something you'd actually say. DouDou Chinese (句式) fixes the real bottleneck: sentence patterns, not word lists. Learn the 100 structures that natural Mandarin conversation is actually built on, then build your own sentences with each one — with instant AI feedback the moment you get it wrong, so mistakes never turn into habits. HOW IT WORKS • Learn a pattern in context, not in isolation • Apply it immediately by building real sentences • Get instant AI feedback and fix mistakes on the spot • Review with FSRS spaced repetition — timed to hit right before you'd forget, so nothing you learn quietly slips away No signup, no setup. Open the app and you're already practicing. WHY IT'S DIFFERENT Vocabulary apps make you feel like you're learning. Sentence patterns make you able to speak. That's the difference between recognizing "你好吗" on a flashcard and actually holding a conversation. FREE, NO CATCH • Spaced repetition flashcards • Spaced repetition audio loops • Sync across all your devices • Basic settings GO PREMIUM — 7-day free trial, then $5/month • AI tutor chat, on demand • 20,000 quiz tokens a day • Every pattern, unlocked • Background audio, so you can practice on your commute • Fine-tune the FSRS algorithm to your pace • Full learning statistics Cancel any time in your account settings — no pressure, no hoops. Every day you put off speaking is another day it feels harder to start. Download DouDou Chinese and build your first real Chinese sentence in the next five minutes. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Redo is the speaking-practice app that scores you and shows you exactly how to get better. Here's the idea: every day you record one short take, up to 60 seconds, answering a simple prompt. Redo transcribes it and scores how clearly you came across on a 0–1000 scale we call the Redo Index. Then it hands you the three specific things holding you back. Not vague advice, but the actual weak spots in this take. You redo the same topic aiming at those, get scored again, and watch the points stack up. That's the whole loop: Record → Feedback → Redo → Improve. Sixty seconds a day. WHY REDO IS DIFFERENT Most apps just tell you that you said "um" a lot. Redo tells you what to fix next — and lets you prove you fixed it. Because you redo the same prompt, your progress is measured against yourself: real, visible, undeniable. WHAT YOU GET • The Redo Index — one score out of 1000 that captures how clearly and confidently you spoke. • Six real skills, each scored with its own feedback: Structure, Conciseness, Confidence, Pronunciation, Filler Rate, and Pace. • Specific next steps — the top three things to work on, in plain language. • The redo — retry any topic targeting your weak spots and get re-scored blind, so the improvement is honest. • Daily 60 — a single 60-second rep a day. Small enough to keep, powerful enough to compound. • Streaks & history — a calendar of every session and a browser of past takes. Replay any recording, revisit any score. • Video or audio — practice with just your voice, or record video to watch your delivery. WHO IT'S FOR • Students prepping for presentations, interviews, and debates • Professionals who pitch, present, and lead meetings • Non-native English speakers building fluency and confidence • Anyone who rambles, rushes, or freezes up — and wants to fix it HOW IT WORKS 1. Record a 60-second answer to the day's prompt. 2. Get your Redo Index and your three targets. 3. Redo the same topic, aiming at those targets. 4. See your new score and the points you gained. 5. Come back tomorrow. Keep the streak. Keep improving. You don't need a coach, a class, or an hour you don't have. You need 60 seconds and the willingness to run it back. Speak clearly. Prove it. Download Redo and record your first take today.