Its 104 apps cover 30 languages, including bilingual dictionaries for 49 language pairs, monolingual explanatory dictionaries and themed references. Together, the apps report 9.9 million dictionary entries, with individual resources offering features such as audio, pronunciation guidance and voice search.

Designed for dependable access on the go, each dictionary stores its database on the device, enabling searches without an internet connection. Users can look up words, explore definitions and related terms, and optionally ask an integrated AI assistant for explanations, synonyms or pronunciation guidance. Learning tools include customizable flashcards, quizzes, vocabulary training and a daily word game. Users can also save words and add missing entries.

On Android, dictionaries are available as separate Google Play apps; on iPhone and iPad, they are collected in the TTdictionary app. All apps are free with advertising. An optional Pro subscription removes ads, lifts feature limits and increases the AI usage allowance.