Watch real short-form videos with interactive subtitles. Every word you tap gets tracked and reinforced with spaced repetition and AI-powered practice. Chinese and English are live in private beta.
Invites go out for iPhone (TestFlight) and Android. Can't wait? Try the web app right now — no invite needed.
Real videos. Interactive subtitles. Science-backed learning that actually works.
Learn from real Chinese short-form videos with interactive subtitles. Tap any word to see its meaning, add it to your vocabulary, and hear it pronounced.
Every subtitle is tappable. Words are color-coded by how well you know them. See pinyin, meanings, and examples instantly — all while the video plays.
The most effective memory technique ever studied. We show you words right before you'd forget them. Words you struggle with come back sooner. Words you know get spaced out.
Every sentence adapts to where you are right now. Words you know appear alongside words you're learning, so you're always challenged but never overwhelmed.
Tap any word to see how well you remember it. Fluo tracks your recall for every single word and schedules reviews at the optimal time. You just practice — the system handles the rest.
Curious why a word is used a certain way? Wondering about grammar? Tap "Ask" on any sentence and get a clear, detailed explanation — like having a tutor available 24/7.
Simple to start. Powerful as you grow.
Browse curated Chinese short-form videos. Every video has interactive subtitles with word-by-word breakdowns.
Tap any word in the subtitles to see its meaning, add it to your vocabulary, and hear it pronounced. Fluo tracks every word automatically.
Fluo schedules reviews using spaced repetition and generates AI practice sentences with your words. Everything you learn sticks.
Paste any Chinese or English text into the translator and instantly see a word-by-word breakdown — color-coded by how well you know each word. Turn real-world Chinese into a learning opportunity.
Real videos. Real Chinese. Real progress.
Fluo is in private beta on iPhone (TestFlight) and Android. Grab a spot — Chinese and English are live, more languages on the way.
Join the Private BetaOr skip the line — the web app is open now.