Company SERGEY CHALKOV created these great apps:
TRANSITIONS - Opportunities for Change, ClearDic Urban - Offline Slang Dictionary, ClearDic RE - Russian-English Dictionary, KoEnDic 한영/영한 사전 8 in 1, 俄汉词典 大БКРС|БРуКС 8 in 1 俄汉俄词典, KoRusDic Pro 한러/러한 7-in-1 사전, Dictionnaire Russe-Français, Littré - Dictionnaire de la langue française, Russo-Italiano Dizionario 6-in-1 - Итальянско-русский словарь 6 в 1, Dicionário Russo-Português 4-in-1 - Португальско-Русский словарь 4-в-1, Энциклопедический словарь медицинских терминов, KoRusDic Pro 8 в 1, Encyclo Medic Dictionary, KoRus Encyclo Medic 의학사전, KorEng Encyclo Medic 의학사전, TOPIK I 한국어 문법 Korean Grammar, TOPIK I 문법 Грамматика, GenChem I Exam Prep, Dicionário Russo-Português, RuFlex Pro Russian Inflection, KoRuEn Pro Advanced Dictionary, and others..