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2025AI Learning Product

Clingword

A vocabulary-learning product that personalizes new-word recommendations and review timing from each learner's performance.

Result
Co-founder · Reached 20,000+ users in under two months
Areas
Reinforcement Learning, Learning Systems, Front-End Development, Product Design

CLINGWORD · 词灵单词 — RL-SCHEDULED VOCABULARY

the launch video

Bilibili · 240k views

every word has a file

every word has a file

AI learning trace

every word has a file

every word has a file

AI learning trace

meaning, in context

meaning, in context

from the Next demo

meaning, in context

meaning, in context

from the Next demo

AI grades your sentence

AI grades your sentence

mistakes → drills

AI grades your sentence

AI grades your sentence

mistakes → drills

recall · compare · spell

recall · compare · spell

word card

recall · compare · spell

recall · compare · spell

word card

wrong once, drilled after

wrong once, drilled after

review engine

wrong once, drilled after

wrong once, drilled after

review engine

Clingword 词灵单词

Learning system

Vocabulary practice that adapts to the learner

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

From research idea to a product used at scale

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.