English Synonyms Moby Thes is a comprehensive dictionary app available on iPhone. Developed by English Channel Inc., this full version app is categorized under Education & Reference. With over 30,260 root words and an extensive collection of 2,520,264 synonyms and related terms, it is the largest synonym resource available.

Powered by the acclaimed "UniDict Engine," English Synonyms Moby Thes is the only iPhone dictionary platform that offers inter-application linking. This means it seamlessly works with other UniDict dictionaries like "American Heritage," "Collins Gem," and "LDOCE."

While it is not meant to replace brand-name thesauri like "Roget's II" or "Oxford Thesaurus of English," it is a valuable addition to any word enthusiast's arsenal. The app offers a scrolling index overview, partial and wildcard searches, hyperlinks from all entries, and definitions with OS dictionaries.

Other notable features include automatic history, bookmarks with memos and folders, flashcards building, AI boosted anagram generator, iCloud bookmark syncing and backup, and sharing options via Email, Facebook, Twitter, and Sina Weibo. It also supports iPad Pro multi-screen and Drag & Drop, DarkMode & 3D Touch, and is compatible with iOS 12 through to iOS 17.

English Synonyms Moby Thes is a reliable and comprehensive dictionary app for iPhone users. It offers complete offline use, making it a convenient tool for anyone looking to enhance their vocabulary and find alternative words.