Vocably is a language learning tool designed for active language users who read, surf, speak, and think in foreign languages. It serves as a combination of contextual dictionary and flashcards, enabling users to select words, translate them instantly, save them, and learn through various interactive methods.

Key features include instant, context-aware translations on any website, the ability to save translations as flashcards, and interactive quizzes and questions to master word cards. The tool supports translation directly from YouTube subtitles and allows users to search for words in their native language when they don't know the right word. It integrates with browser extensions and mobile apps for seamless use across devices.

The tool works by allowing users to select words or phrases on web pages, which triggers an instant translation. These translations can then be saved as flashcards that sync across devices. The system uses AI-powered translation to provide accurate and detailed definitions, including multiple definitions and examples of use when available.

Benefits include efficient vocabulary building, seamless integration with daily browsing activities, and engaging learning methods through quizzes. Use cases include learning new words while reading articles, watching videos with subtitles, and practicing vocabulary on mobile devices during commutes or free time.

Target users are language learners at various levels, particularly those who are intermediate or upper-intermediate. The tool supports over 90 languages and is available as Chrome extension, Safari extension, iOS app, and Android app, with synchronization across all platforms.