TOEIC and everyday English vocabulary for Thai learners — spaced-repetition flashcards, word categories, and progress tracking.
English Vocab: Word Builder helps Thai learners build the vocabulary they need for the TOEIC exam, IELTS, university entrance, and everyday English. The app focuses on retention — not just exposure — using a spaced-repetition schedule that brings each word back at exactly the right moment.
Flashcard engine. Swipe to mark a card as known or review again. The algorithm calculates the next review date based on answer history — a word you know well disappears for weeks; a word you keep missing comes back tomorrow.
Word categories. Words are grouped by topic (Business, Travel, Technology, Daily Life) and by test type (TOEIC, IELTS). Users can focus a session on a single category or mix everything together.
Progress dashboard. A simple chart shows words learned over time. A streak counter encourages daily practice. Both update without a server round-trip — all state is local.
The app is 100% offline — all 3,000+ words ship inside the app bundle; no download required after install. Study sessions and progress are stored on-device using Hive. No account, no login, no server call needed to learn. Works on the cheapest Android phones with no connectivity.
The app is ad-supported. A one-time in-app purchase removes ads permanently. The learning experience is identical either way.