Dunno: English Dictionary
Dunno: English Dictionary is made and published by Linh Nguyen. AppBrain is an independent app data site and isn't affiliated with Linh Nguyen. The app name, icon, screenshots and description belong to Linh Nguyen and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 4.97
- 30 ratings
- Last updated
- September 8, 2026
- Size
- 196.3 MB
It doesn't have enough ratings yet to judge what users think.
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Store listing
By Linh Nguyen, from the App Store
Description by Linh Nguyen Written by the developer, not by AppBrain. Click to read.
Dunno is more than a dictionary. It's a complete English learning assistant: 350,000 words, grammar organized by CEFR level, camera and voice translation, pronunciation scoring, and your own vocabulary notebook with flashcards and quizzes.
LOOK UP ANYTHING, ANYWHERE
- Full offline dictionary — words, grammar, prepositions, sentence patterns, images
- Autocomplete predicts the word as you type
- Search by voice, or point your camera at a word and get the meaning instantly
- Every entry includes definitions, examples, word forms, synonyms, antonyms and related words
- Audio pronunciation in both British and American English
TRANSLATE 89 LANGUAGES
Two-way translation for text, photos and full sentences — Spanish, French, Chinese, Japanese, Korean, Vietnamese and 80+ more.
PERFECT YOUR PRONUNCIATION
Record yourself, compare it with a native speaker, and get instant feedback on exactly what to fix.
CHECK YOUR GRAMMAR
Paste any sentence to catch spelling and grammar mistakes, with a clear explanation of every correction.
GRAMMAR BY LEVEL
127 grammar topics organized from A1 to C2, so you always know what to learn next.
YOUR VOCABULARY NOTEBOOK
- Save any word with one tap
- Review with flashcards and quizzes so words actually stick
- Ready-made lists: 3,000 TOEIC words, plus IELTS, TOEFL and SAT sets
- Word lists by field of study and difficulty level
- Track how many words, sentences and grammar points you've mastered
- Keep studying on your lock screen in spare moments
PRACTICE FOR THE TEST
Full TOEIC mock tests with answer keys and detailed explanations for every question.
ASK THE COMMUNITY
Stuck on a sentence? Post it and get answers from other learners.
BY THE NUMBERS
- 350,000 English words
- 418,000 examples and illustrations
- 127 grammar lessons, A1 to C2
- 89 translation languages
Also available on the web at http://dunno.ai
Privacy Policy: https://dunno.ai/other/privacy-policy
Terms of Use: https://dunno.ai/other/term
WE READ EVERY MESSAGE
Send ideas, bug reports or feature requests to eup.mobi@gmail.com — thank you!
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 196.3 MB
- Content rating
- Everyone
Technologies used by Dunno: English Dictionary
Releases
Updates seen on the App Store- Version
- 2.3.3
- Launched
- June 2021
No changelog data
Alternatives
Similar apps and more from Linh Nguyen
Rankings
App Store top chartsApp Store Rankings for Dunno: English Dictionary
About the app and developer
About Dunno: English Dictionary
Dunno: English Dictionary is an education app developed by Linh Nguyen.
User Ratings
Dunno: English Dictionary is rated 4.97 out of 5 stars. The rating is based on 30 ratings.
App Information
Dunno: English Dictionary is freely available from the App Store. The app size is 196.25 MB. The latest version available is 2.3.3. The last update was on September 8, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since June 2021.
Developer information for Linh Nguyen
Address:
Frequently asked questions about Dunno: English Dictionary
Is Dunno: English Dictionary free?
Yes. Dunno: English Dictionary is free on the App Store.
Is Dunno: English Dictionary still available?
Yes. Dunno: English Dictionary is on the App Store, and the last update we saw was on September 8, 2026.
How large is Dunno: English Dictionary?
Dunno: English Dictionary is 196.25 MB.
Is Dunno: English Dictionary suitable for children?
App Store rates the content of Dunno: English Dictionary as suitable for everyone.
How do people rate Dunno: English Dictionary?
Dunno: English Dictionary scores 4.97 out of 5 stars, from 30 ratings on the App Store.
Who made Dunno: English Dictionary?
Dunno: English Dictionary was developed by Linh Nguyen. It is listed in the education category on the App Store.
What are the best alternatives to Dunno: English Dictionary?
People looking at Dunno: English Dictionary also look at these education apps: Todaii: Learn English, Learning English: Eng Breaking, MochiVocab - Learn English, Kaodemy, Ngữ pháp tiếng Anh - Bài tập.