Vocastar - vocabook

A Korean-centered vocabulary reference covering 9 languages. Made for Korean students working through tiered vocabulary, professionals refining their English, and non-Korean speakers learning Korean.

▍At a glance
• ~13,000 Korean headwords
• 33,000+ English mappings
• 9 languages: Korean / English / Japanese / Chinese / Russian / Spanish / Portuguese / French / German
• English entries are tagged across 5 tiers — Entry / Daily / Intermediate / Advanced / Expert — with nuance notes for each synonym

▍What sets it apart
• Beyond 1:1 translation — each Korean word maps to multiple English synonyms grouped by register, each with a short nuance explanation.
• See all 9 languages at once — one search returns translations and pronunciations across the entire set.
• Pronunciation tailored for Korean readers — Roman letters for Korean, Hangeul for foreign languages.
• Built-in CJK support: Hanja for Sino-Korean words, Simplified/Traditional Chinese toggle, Hiragana/Katakana for Japanese.
• Search in any of the 9 languages. Hanja, Romanization, or Hangeul phonetic spelling all work.

▍Key features
• Detailed entry view — tiered synonyms with nuance notes plus 9-language translations
• Filters by category, part of speech, and English level
• Bookmarks, hide-known-words list, and your own custom entries
• Two quiz modes — Practice (no time limits) and Star catcher Live (a staged challenge that unlocks star effects)
• Falling-star effect — count, size, and colors of falling stars unlock as you clear Star catcher Live stages
• Dark / light mode, custom background image and colors
• Adjustable text size and UI language (Korean / English)
• Local backup and restore (.json)

▍Made for
• Korean students working through tiered English vocabulary
• Working professionals comparing similar English words by register
• Japanese, Chinese, Russian, Spanish, Portuguese, French, or German speakers learning Korean
• Anyone who wants to see the full network of meanings tied to a single English or Korean word

▍Pricing
• Free with banner, interstitial, and rewarded ads
• One-time in-app purchase to remove ads