Progressive Web App
Nihaoo is a free Chinese learning app that runs in your browser — and installs directly on any device, no app store required.
What's inside
From your first 50 characters to HSK level 4 — Nihaoo gives you the tools to build real, lasting vocabulary.
The most frequently used characters, ordered by real-world usage frequency. Learn what actually appears in everyday Chinese text.
Set a target — Top 50, 100, 300, or 500 characters — and track your progress with a clear visual indicator. Small goals build the habit.
See every character drawn stroke by stroke, in the correct order. Essential for writing — and surprisingly helpful for memorising shapes.
Hear each character and word spoken clearly. Tap to replay as many times as you need, entirely at your own pace.
Words you learn are scheduled for review at 12 hours, 24 hours, 3 days, 1 week, and 2 weeks — science-backed intervals that fight forgetting.
Browse and study the official HSK vocabulary lists — the international standard for Chinese language proficiency testing.
Study in your own language. Nihaoo supports Vietnamese, Indonesian, Thai, Spanish, English, Japanese, Korean, and many more.
Once installed, Nihaoo works without an internet connection. Study on the subway, on a flight, or anywhere without signal.
Nihaoo.app publishes original articles with fresh perspectives on how Chinese actually works — helping you understand the language more deeply, not just memorise it.
Why install
Installing Nihaoo as a PWA takes 10 seconds and makes a genuine difference to your daily study habit.
A real icon on your home screen or desktop. No browser, no address bar, no friction between you and your study session.
Runs in its own window without browser chrome. More space, less distraction — it genuinely feels like a native app.
Your vocabulary and progress are cached locally. Study even when you have no signal.
No account required. No permission requests. No approval wait. It's already on the web — just save it to your device.
Updates happen silently in the background. You always have the latest vocabulary and features, automatically.
Everything is stored on your device. No cloud sync required — your learning data stays private and local.
How to install
Find your device below. Most installations take under 30 seconds.
Questions
Is Nihaoo really free?
Yes. The core vocabulary, stroke animations, pronunciation, spaced repetition system, and share cards are all free. No subscription required.
Do I need to create an account?
No. Your learning progress is saved directly on your device. No email, no password, no account of any kind.
Will I lose my progress if I uninstall?
Uninstalling removes the icon, but your progress data stays in your browser storage. Reinstall and it is still there. Clearing your browser's site data, or using a Private or Incognito window, will erase it.
Can I use it on multiple devices?
Yes, but each device keeps its own local progress independently. Cross-device sync is not currently available.
What is the difference between installing and just using the website?
The content is identical. Installing adds a home screen icon, a full-screen window without browser chrome, and offline access. The real benefit is removing friction from your daily study habit.
How do I share a word card as an image?
Open any word in Nihaoo and tap the share button. The app instantly generates a card image containing the character, pinyin, and your language's translation, then opens your device's native share sheet so you can send it anywhere.
How much storage does it use?
The app is lightweight — typically 2 to 5 MB for the core shell, plus vocabulary data cached as you browse. It will not make a noticeable dent in your storage.