Explore the meaning and origins of hundreds of common American English idioms. Search flexibly, add personal notes, and mark favorites for easy access. Learn about the history behind phrases like 'red herring' and 'wild goose chase'.





19+ similar apps compared and reviewed
Whether you want more options like COBUILD Advanced American or a completely different take on the same concept, our curated list of 19+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.





Explore the meaning and origins of hundreds of common American English idioms. Search flexibly, add personal notes, and mark favorites for easy access. Learn about the history behind phrases like 'red herring' and 'wild goose chase'.





This open platform dictionary app supports multiple languages and allows users to download various pre-built dictionary data. It offers fast lookups, rich text content, pronunciation, search history, and in-page search capabilities.






This comprehensive offline dictionary provides 250,000 headwords, phrases, and translations between Russian and German. It includes native speaker recordings, grammar guidance, and a vocabulary trainer. Ideal for work, study, travel, and daily use.


This extensive dictionary app provides professional-grade German-Italian and Italian-German translations. It features a vast vocabulary, specialist terminology, and helpful tools like full-text search and native speaker recordings, all usable offline.


This comprehensive offline dictionary provides 265,000 headwords, phrases, and translations between German and Turkish. Ideal for work, study, travel, and daily use, it includes a free vocabulary trainer and offers personalized settings. Access translations quickly without an internet connection.


This comprehensive dictionary provides extensive German-French and French-German translations with up-to-date vocabulary and specialist terminology. It offers offline access, native speaker recordings, and advanced search features for professional use, travel, and study.


This app provides access to a comprehensive English-Japanese dictionary with up-to-date specialized terms and extensive example sentences. It offers fast, offline search capabilities and integrates with other apps and Safari for quick lookups. Users can purchase the full dictionary data for offline use and sync their bookmarks and notes across devices via iCloud.


Access comprehensive offline Portuguese and English bilingual dictionaries with over 1 million definitions, translations, and examples. This app offers detailed linguistic information, including etymology, verb conjugations, and idiomatic expressions, all without requiring an internet connection.


Access a vast English dictionary and thesaurus with millions of words, definitions, and pronunciations. Explore word origins, sample sentences, and discover connections with a unique conceptual thesaurus. Enjoy offline access and an ad-free experience.