⭐ Flagship Application
S-RootWords
Master 10,000+ English Words Through Ancient Greek & Latin Roots
Deconstructs vocabulary into ancient morphemes with smart Spaced Repetition (SRS), dual US/UK native audio stories, and explanations in 18 languages. Built for SAT, GRE, IELTS, and lifelong English fluency.
Kids & Family
Sungy
Safe, Playful & Interactive Cognitive Companion for Kids
Inspiring safe, interactive, and joyful learning journeys for young children through engaging mini-adventures and creative play.
Mnemonic Learning
S-Từ Vựng Liên Tưởng
Visual Association & Mnemonic Vocabulary Mastery
Harnesses vivid mental imagery and emotional context anchors to make English vocabulary retention fast, effortless, and indelible.
Early Learning
S-Kids English
Phonics & Foundational English for Early Learners
Interactive phonics, essential everyday nouns, and playful pronunciation audio tailored for kindergarten and primary students.
Cultural Utility
S-Lịch Âm
Traditional Lunar Calendar & Cultural Guide
Accurate lunar-solar date tracking, auspicious timing, solar terms, and Vietnamese cultural heritage presented in an elegant interface.