No! MessagEase's technology is applicable to almost any language and alphabet, even Pinyin (jh拼音).

The Android version of MessagEase includes implementations for Hebrew , Japanese Katakana (カタカナ ), Persian , Arabic . as well as keyboards optimized for Spanish, French, and German

The same optimization, letter frequency analysis and digraph data generation can be applied to other languages/alphabets to create MessagEase versions for those languages and alphabets.