Keysake

Keysake is a macOS input method for Chinese speakers learning English as they type. Product Hunt says it shows English alongside Chinese, lets users save words, phrases, or full sentences, and plans support for Japanese, Korean, and more languages. The official site confirms real-time expression discovery, double-tap saving, and review for phrases users actually want to say. It is a focused language-learning utility that fits LunarList better than a generic translator because it attaches learning to daily typing behavior.