some books crashes the app like those books (Тіл біліміне кіріспе)
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Compare allCons: (1) requires a phone number to register (archaic method), (2) archaic UX-design, (3) user only learns about book access options (subscriptions) after registering, which is confusing. Pros: (1) This is the only app I know of that only catalogs books in Kazakh.