the launch video
Bilibili · 240k views
A vocabulary-learning product that personalizes new-word recommendations and review timing from each learner's performance.
CLINGWORD · 词灵单词 — RL-SCHEDULED VOCABULARY
the launch video
Bilibili · 240k views

every word has a file
AI learning trace

meaning, in context
from the Next demo

AI grades your sentence
mistakes → drills

recall · compare · spell
word card

wrong once, drilled after
review engine

Learning system
Clingword uses learner performance to decide when to introduce new vocabulary and when previously learned words should return for review.
Its review schedule follows the forgetting curve, turning reinforcement-learning signals into a more individualized study plan.
Outcome
The product reached more than 20,000 users in under two months. I worked across the reinforcement-learning logic, front-end experience, and product development.