Knowji vocabulary apps for all ages.

Knowji’s vocabulary apps are simply the best vocabulary apps in the App Store. No other apps provide an extraordinary set of content (cartoon illustrations, audio pronunciations, easy-to-understand definitions and example sentences, etc.) coupled with a powerful spaced repetition algorithm that ensures you’ll remember everything you’ve learned. In addition, several of our apps are aligned with the Common Core State Standards. We’ve invested over four years in development and refinement in an effort to deliver a high quality learning experience. We hope to delight you.

Try our FREE Knowji Vocab Lite app.

Apple iOS 6.0 and later (iPhone® / iPod Touch® / iPad®)


Knowji SAT Top 500
Knowji PSAT
Knowji TOEFL
Knowji AWL (Academic Word List)
Knowji AWL+ (Academic Word List) for Chinese ESL students
Knowji Theme Words for Chinese speakers
Knowji Vocab 7-10 (For Ages 12 to 99. Words from SAT, ACT & GRE. Common Core Aligned)
Knowji Vocab 10 (For Ages 15 to 99. Words from SAT, ACT and GRE. Common Core Aligned)
Knowji Vocab 9 (For Ages 14 to 99. Words from SAT, ACT and GRE. Common Core Aligned)
Knowji Vocab 8 (For Ages 13 to 99. Words from SAT, ACT and GRE. Common Core Aligned)
Knowji Vocab 7 (For Ages 12 to 99. Words from SAT, ACT and GRE. Common Core Aligned)
Knowji Vocab 3-6 (For Ages 8 to 99 and ESL/ELL learners. Common Core Aligned)
Knowji Vocab 6 (For Ages 11 to 99 and ESL/ELL learners. Common Core Aligned)
Knowji Vocab 5 (For Ages 10 to 99 and ESL/ELL learners. Common Core Aligned)
Knowji Vocab 4 (For Ages 9 to 99 and ESL/ELL learners. Common Core Aligned)
Knowji Vocab 3 (For Ages 8 to 99 and ESL/ELL learners. Common Core Aligned)