Dunno: English Dictionary
Translate, Pronounce, Offline
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Newly redesigned! Look up any English word, translate text or photos, and hear native pronunciation — online or off. Build your own notebooks and practice with mock tests
Look up any English word, translate text or photos, and hear how it's actually pronounced — online or offline.
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!
A whole new Dunno.
We rebuilt the look and feel of the app from the ground up
— everything is cleaner, faster, and easier on the eyes.
- Fresh, consistent design that looks great in both light and dark mode
- Search, notebooks, and mock tests are simpler and more intuitive
- Smoother scrolling and quicker lookups
- Improved stability, plus dozens of small fixes
Open the app and see the difference.
The developer, Linh Nguyen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Linh Nguyen
- Size
- 205.8 MB
- Category
- Education
- Compatibility
Requires iOS 12.0 or later.
- iPhone
Requires iOS 12.0 or later. - iPad
Requires iPadOS 12.0 or later. - iPod touch
Requires iOS 12.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 7 more
- English, French, Japanese, Korean, Simplified Chinese, Spanish, Traditional Chinese, Vietnamese
- Age Rating
13+
- 13+
- Contains
Advertising
Messaging and Chat
User-Generated Content
Social Media
- In-App Purchases
Yes
- Premium version $19.99
- Premium version [-30%] $13.99
- Premium version [-40%] $11.99
- Standard version [-30%] $11.99
- Premium version [-50%] $9.99
- Standard version [-50%] $8.49
- Standard version [-40%] $10.49
- Basic version [-50%] $6.49
- Basic version [-40%] $7.49
- Basic version [-30%] $8.99
- Copyright
- © EUP