Every word opens a world.
Your Mandarin notebook, now alive.

Now: Chui.
- You hear it on the street.
- You log it in Chui.
- It adds to your vocabulary.
Your vocabulary
Today’s plan
The map of Mandarin.
Seven regions, from the foothills to the summit. Chui changes outfit in each one.

Altitude is your accumulated vocabulary · 11,000 in total · Official list: HSK 3.0 Exam Syllabus (2025)
What you find along the way.
Every real milestone leaves you a relic.
Read. Listen. Write. Speak.
- Read
- Listen
- Write
- Speak
Every word, in a female and a male voice.
Chui never pushes.
Almost. That’s how you learn.
When you miss 
7 days in a row. Even I didn’t see that coming.
When you keep going 
I’ll be here. No rush.
When you come back 
Questions
When is it out?
Soon, for Android and iPhone. Join the list and we’ll email you the day it launches.
How much does it cost?
Free at launch. An optional Premium plan will come later, and the list will be the first to know.
Do I need to know Chinese?
No. You start at HSK 1 from zero. If you already know some, mark “I know this one” and move ahead.
How far does it go?
Up to HSK 9: all 11,000 entries of the official HSK 3.0 Exam Syllabus (2025).
What languages is the app in?
Spanish and English.
What do you do with my email?
Only tell you about the launch and share news about Chui. Unsubscribe with one click.




