BrainRock
Turn the language you encounter into vocabulary you can revisit.
BrainRock is an iOS and Android vocabulary app that turns topics or foreign-language photos into flashcards for studying with examples, text-to-speech and quizzes.
Start for free with daily AI generation limits. An optional monthly in-app subscription is available.
How it works
Choose what to learn
Enter a topic, such as travel phrases or work vocabulary. You can also take or select a photo containing foreign-language text.
Review and save your cards
Choose your target language and check the generated words, meanings and examples. Review the AI output before saving your vocabulary pack.
Listen, recall and check
Study saved cards and listen to pronunciations. Use quizzes and tests to check what you remember and revisit your vocabulary.
Study features
Vocabulary from photos
Try creating cards from menus, signs or study materials. Clear, readable text helps recognition. Results depend on the photo.
Words and expressions for your interests
Choose word or sentence mode and a difficulty level. Be specific: try a topic such as phrases for ordering food while travelling in Japan.
Meanings, examples and audio
See meanings alongside example sentences and translations, and listen with text-to-speech. Voice availability depends on your device and language settings.
Quizzes and study progress
Use flashcards, quizzes, tests and memorization status to check your learning. Track progress with experience points, levels and statistics.
Build a vocabulary pack around your own situation
Language on your travels
Bring in a photo of a menu or sign to collect vocabulary you encounter while travelling.
Expressions for your work
Study phrases for meetings or emails instead of relying only on a predefined vocabulary list.
Your own learning materials
Create personal vocabulary packs around your study materials and topics that interest you.
These are suggested use cases. Check exam vocabulary against official study materials. AI-generated difficulty and content are not certified by exam providers and do not guarantee learning outcomes.
Start free. Subscribe if you need more.
Free access
Start creating AI vocabulary packs and studying saved cards. Free AI generation is subject to daily usage limits.
Monthly subscription
An optional in-app monthly subscription provides more AI generation access. It renews automatically. Check the app and store before purchase for pricing, usage limits, renewal and cancellation terms.
Prices and availability may vary by country, platform and app version. Refer to the latest information shown at checkout.
FAQ
Which languages can I study?
You can generate vocabulary and expressions in languages including English, Japanese, Chinese, French, Spanish and German. Check the target-language selector in the app. Language and voice availability may vary by app version and device settings.
Can I create flashcards from a photo?
You can create cards from a camera photo or a gallery image containing foreign-language text. Select the language you want to study, review the result and save it. Blurry text or complex layouts can cause recognition errors.
Are generated meanings and examples always correct?
No. AI-generated translations, examples and pronunciation guides can contain errors. Check important expressions against a dictionary or textbook. They do not replace official exam vocabulary lists or professional translation.
Can I use BrainRock without an internet connection?
Creating new AI vocabulary packs requires an internet connection. Saved card data is stored on your device. Audio playback can depend on installed voices and your network environment.
How do I study and review?
Study saved flashcards, listen to pronunciations, take quizzes and tests, and check memorization status. Revisit words you do not remember in your saved vocabulary packs.
How are my photos and prompts processed?
For AI generation, your prompts and selected photos are sent to Google AI services through Firebase AI. Do not upload sensitive personal information or materials you do not have permission to use. See the privacy policy for more information.
Where can I check and manage my subscription?
Check the in-app purchase screen for subscription pricing and terms. Manage subscriptions through the App Store or Google Play account used to purchase them. Deleting the app does not cancel your subscription.