Chaeksum - Calm Paper Reader

Chaeksum is a reading app with no ads. The name is Korean for "the breath of a book". No banners, no pop-ups, no video ads. When you read, there is only text. Made for people who loved e-ink readers and now read on their phone. Easy on the eyes • The page is never brighter than the room around you, with less flicker in the dark • Warm grey paper without blue glare, warmer after sunset • Black & white mode for this app only • Turn page by page with your choice of effect, or scroll straight down (trial) • The screen stays on while you read, and brightness is right there in the reader Any file, fast • TXT, EPUB and PDF — password-protected PDFs too • Import a ZIP of books in one go • EPUBs keep their own table of contents and footnotes • Even books thousands of pages long open in about a second • Link your Downloads folder once and new books appear right away • Find, sort and rename books in your library • On iPad in landscape, two pages side by side like a book — PDFs too, with contents and search While you read • Highlights, notes, bookmarks and full-text search; step through matches with ‹ › • Long-press to select, drag the handles, and carry on onto the next page • Share a passage as a paper card image • Dictionary and translation • Read aloud with natural voices and a sleep timer (10 free minutes a day) • Turn pages with a keyboard or a Bluetooth page turner • Choose what the page header and footer show: title, chapter, pages left, time left, percent, progress bar • Home Screen and Lock Screen widgets, plus today's reading time and your streak • Lock the app with Face ID • Export highlights and notes as text • Literata, Charter and Korean book fonts — remembered separately for Korean and English books • English, Korean and Japanese Chaeksum Pro — buy once, keep forever (not a subscription) • Fine typesetting: line and paragraph spacing, letter spacing, margins, weight, alignment • Different fonts, spacing and margins per book; save your own presets • Unlimited read-aloud • Unlimited highlights and notes (free: unlimited in your first book, then 3 per book) • Add your own fonts (.ttf, .otf) • Every paper tone • iPhone–iPad sync through your own iCloud: position, highlights, notes, bookmarks and book files (no sign-up) Books bought from stores with DRM protection can't be opened. Chaeksum reads the TXT, EPUB and PDF files you own. Tips The app is made without ads. If you like it, you can buy the developer a coffee in Settings. Tips unlock nothing — they are just support.