Chinese-first tools
Built around pinyin, HSK, grammar, and real-world expression instead of generic AI chat.
All Your Chinese Learning Toolsin One Workspace
Convert pinyin, look up HSK words, check grammar, rewrite Chinese emails, and save useful results in one focused workspace.
PINYIN
HSK LOOKUP
GRAMMAR FIX
EMAIL REWRITE
WORKSPACE
PINYIN
HSK LOOKUP
GRAMMAR FIX
Built for Learners
Using Chinese
Using Chinese
NiuTools turns frequent Chinese learning and writing tasks into focused tools people can keep using.
From independent learners to teachers and global teams, the product keeps input, results, saving, and review in a clear workspace.
5+
Core learning tools
30+
Monthly AI uses on free plan
Why Choose Us
Reusable results
History, favorites, and saved outputs make useful work easier to review and reuse.
Free utilities before AI
Pinyin, conversion, and HSK lookup stay free. AI is used where it improves writing.
Built for repeated study
Each tool is designed around input, result, copy, save, and the next learning action.
Core Tools
#1
Pinyin Conversion
Generate readable pinyin instantly for study sessions, lessons, and pronunciation review.
#2
HSK Vocabulary Lookup
Review levels, meanings, and example context with less searching and more retention.
#3
Grammar & Expression Review
Improve correctness and naturalness with feedback tuned for learner writing.
#4
Email Rewriting & Saved Review
Rewrite practical Chinese messages and keep useful outputs inside a workspace built for repetition.
Featured Tools
Chinese Grammar Checker
AI WRITING
AI USES
HSK & Pinyin Tools
FREE TOOLS
NO AI USES
Our ClientReviews
LANG SCHOOL
We use it to review student writing. The fixes feel more natural and easier to explain in class.
Mia Chen
Program Lead
SELF LEARNER
The workspace and history are the biggest win. I no longer repeat the same lookups and copy-paste loops.
David Lin
Chinese learner
GLOBAL TEAM
It saves a huge amount of time when we draft Chinese emails and need a more natural tone for real communication.
Sofia Wang
Operations Manager
HSK COHORT
Once we connected vocabulary lookup, pinyin conversion, and writing support in one flow, learners stayed much more consistent from task to task.
Leo Zhang
Learning Program Advisor
TEACHER STUDIO
History and favorites save us the most time. We can return to useful results quickly and turn them into lesson material without starting over.
Nina Wu
Chinese Teacher
LANG SCHOOL
We use it to review student writing. The fixes feel more natural and easier to explain in class.
Mia Chen
Program Lead
SELF LEARNER
The workspace and history are the biggest win. I no longer repeat the same lookups and copy-paste loops.
David Lin
Chinese learner
Ready to start your next
Chinese breakthrough?
Chinese breakthrough?