iVocabulary 3 is a comprehensive vocabulary learning app available for iPhone users. It acts as a personal vocabulary coach, allowing users to collect, manage, and study their vocabulary and specific terms for various purposes such as school, university, work, or hobbies. The free version of iVocabulary 3 is limited to 2 documents with 30 words each, with an option to upgrade to an unlimited version within the app.

The app offers a range of features including slideshows, multiple choice tests, and cards for studying on the go, now also compatible with Apple Watch. With iCloud synchronization, users can access their vocabulary across multiple devices like iPhone, iPod touch, iPad, and Mac. iVocabulary for Mac is available as a separate purchase on the Mac App Store, providing seamless integration for managing and learning vocabulary across devices.