Octobo: English Vocabulary

Build a vocabulary habit that lasts with Octobo.

Study with swipeable flashcards, reveal clear English definitions and examples, and hear pronunciation when you need it. Words you miss automatically move into your personal Learning list, where focused quizzes help you turn weak words into progress.

Choose from practical vocabulary packs for everyday English, beginner study, work, travel, SAT, IELTS, and more. Smart review scheduling brings words back at the right time so you can remember them for longer.

With Octobo you can:
• Learn with fast, gesture-based flashcards
• Review missed words in one place
• Practice mixed quizzes built from your weak words
• Track streaks, accuracy, mastery, and daily activity
• Set a daily learning goal and optional reminders
• Sync progress securely across devices with your account

Octobo is designed for short, consistent study sessions with no ads, subscriptions, or in-app purchases.

SAT and IELTS packs are unofficial study resources and are not affiliated with or endorsed by their respective trademark owners.