Oltek — Text & Code Viewer

Oltek reads documents and source code as text on iPhone and native Mac. FILES AND ENCODINGS • TXT, TEXT, MD, LOG, RTF and EPUB. • Plain-text code, configuration and data files: Swift, Python, JavaScript, TypeScript, C/C++, Java, Kotlin, Rust, Go, HTML/CSS, JSON, YAML, XML, CSV and more, including extensionless text files. • Code preserves indentation, tabs and blank lines in a monospaced font. No execution, editing or syntax highlighting. PDF, Office documents and other binary formats are not supported. • Auto-detect or choose an encoding provided by the device: Unicode, CP949/EUC-KR, Shift_JIS/EUC-JP, GB18030/Big5, Windows, ISO, KOI8 and others. Some encodings require manual selection. • Preview a different encoding and create a new copy while keeping existing copies and reading records. • RTF and EPUB show body text without formatting or media. EPUB follows package reading order. DRM-protected or encrypted text is not supported. READING AND NAVIGATION • Scroll or paged reading; text search, bookmarks and saved positions. • Automatically detect chapter headings and search the chapter list. • Drag the position bar to preview text and the detected chapter; release to jump. Return to the position before a search, chapter or position jump. • Choose swipe, side tap/click or both. Arrow-key paging; iPhone requires a hardware keyboard. • Native Mac keyboard shortcuts and adjustable text width. Apple Silicon and Intel support. • System, light and dark appearance, font size and line spacing. • UI in English, Korean, Japanese, Simplified/Traditional Chinese, Spanish, French and German. Imported text is not translated. LOCAL STORAGE Plain text is stored inside the app as an original-byte copy and a UTF-8 reading copy. RTF and EPUB store extracted body text. Original files are unchanged, and later original-file changes do not automatically update imported copies. Earlier-version imports require importing the original again for encoding previews. Files, positions, bookmarks and settings stay on each device. No iPhone–Mac sync. Large-file processing depends on device memory and performance. No account or in-app purchases. A small fixed-size banner may appear at the bottom of the iPhone file list.