No revenue estimate for the App Store: Apple publishes no install counts, and its star-rating counts don't calibrate to sales the way Steam's written reviews do. Reviews and prices only.
Koobi is a cozy word puzzle that teaches you real Korean — one tile at a time. Tap Hangul tiles to spell words, clear the board, and every word you find becomes a flashcard you actually remember. No textbooks, no sign-up. Just play. — HOW IT WORKS — • Each pack gives you 16 Korean syllable tiles • Spell the 5 goal words to clear the pack • Discover hidden bonus words for a Perfect Pack • Tap any word to see its meaning, romanization, and TOPIK level — LEARN AS YOU PLAY — • Every word you find is saved to your Vocabulary • Review words as flashcards anytime • Bookmark tricky words and filter by topic • Track your stats, streaks, and mastered categories — THEMES TO EXPLORE — First Words · Food & Dining · Family & People · Home & Daily Life · Out & About · Work & Society · K-Culture · Nature & Animals A brand-new pack unlocks free every day. Build a daily streak and learn Korean a little at a time — the fun way. — KOOBI+ — Unlock every pack instantly, remove ads, and get word hints — with a single one-time purchase. No subscription, lifetime access. Whether you're starting from zero or brushing up for TOPIK, Koobi makes Korean vocabulary stick. Start your first pack now!
Trends
Price over time on the United States storefront, quoted in USD — from our own daily price tracking. Other markets are listed under "Price by market" in the Prices tab; they are not on this axis, because one line cannot be two currencies.
Showing the last 90 days (the review-based charts: the last 4 monthly points). Full history and CSV export come with a free account.
Related
| Game | Revenue (estimated lifetime) | Reviews | Score | Price |
|---|---|---|---|---|
| F2P | 1.1M | 97% | Free | |
| F2P | 581.6K | 98% | Free | |
| F2P | 172.2K | 96% | Free | |
| F2P | 64.5K | 92% | Free | |
| F2P | 54.4K | 98% | Free | |
| F2P | 52.6K | 98% | Free |