Our verdict on Knowji
Knowji is a focused vocabulary trainer that uses spaced repetition and memorable illustrated flashcards. It is effective for exam word lists, but feels basic next to modern AI language apps.
What is Knowji?
Knowji is a family of audio-visual vocabulary apps built around spaced repetition.
Each word comes with an illustration, audio pronunciation, definitions and example sentences. A spaced-repetition algorithm schedules reviews just before you would forget, so words move into long-term memory.
Separate apps cover grade-level vocabulary and exam lists such as SAT, GRE, ACT, TOEFL, IELTS, ISEE and the Academic Word List. Progress tracking shows which words are learned and which need work.
Lite versions let you try a set of words free, with full word packs unlocked through in-app purchases. Knowji is mainly available on iOS.
Knowji at a glance
| Made by | Knowji |
|---|---|
| Launched | 2012 |
| Category | Vocabulary App |
| Platforms | iOS |
| Free plan | Yes |
| Pricing | Free Lite; in-app purchases |
| Website | knowji.com |
Knowji key features
Spaced repetition
Reviews timed for long-term memory.
Illustrated flashcards
Memorable images for each word.
Audio pronunciation
Hear every word spoken.
Exam word lists
SAT, GRE, TOEFL, IELTS and more.
Grade-level packs
Vocabulary for school years.
Progress tracking
See learned and weak words.
Who Knowji is best for
High-school students
SAT and ACT preparation.
Graduate applicants
GRE vocabulary.
English learners
TOEFL and IELTS word lists.
Parents
Building children's vocabulary.
Knowji pros and cons
What we like
- Proven spaced-repetition method
- Memorable visuals and audio
- Exam-specific word lists
- Simple and focused
What could be better
- Mostly iOS only
- Feels dated next to AI apps
- Word packs sold separately
- No speaking or writing practice
Knowji pricing
Lite
Try a limited set of words.
Full word packs
One-time purchases per word list.
Prices vary by app and region in the App Store. Prices checked November 2026. AI pricing changes often, so confirm on the official Knowji site.
How to get started with Knowji
- Download the Knowji app for your exam or level.
- Study new words with flashcards and audio.
- Review daily as spaced repetition schedules words.
Knowji alternatives
| Tool | Best for | Starting price |
|---|---|---|
| Knowji | Students building vocabulary for school or exams like SAT, GRE and TOEFL | Free Lite; in-app purchases |
| Duolingo | Gamified language learning | Free, Super $12.99/mo |
| Duolingo AI | AI conversation practice | Free, paid plans |
| ChatGPT | Custom vocabulary quizzes | Free, Plus $20/mo |
| Khanmigo | AI tutoring | From $4/mo |
Knowji FAQ
Is Knowji free?
Knowji Lite apps are free to try, with full word packs available as in-app purchases.
Is Knowji good for the SAT and GRE?
Yes. Knowji has dedicated word lists for SAT, GRE and other exams.
Does Knowji use AI?
Knowji uses an adaptive spaced-repetition algorithm to schedule reviews.
Is Knowji on Android?
Knowji is mainly available on iOS.
Sources: Knowji on the App Store (AppFollow). Reviewed by the Digicrusader editorial team. Compare more options in our directory of 1,000+ AI tools.
