DocuOne - PDF Reader & Editor

PDF reader, PDF editor and document viewer for Word, Excel, PowerPoint and HWP — all in one app. DocuOne opens, searches, edits and converts every document on your phone, and it works offline on your device.
Stop switching between a PDF app, an office app and your gallery. Open the PDF from your email, the spreadsheet from work and the file a friend sent you — right here.

■ One document viewer for every file
· PDF reader — large PDFs open fast, page by page
· Word viewer (DOC, DOCX) · Excel viewer (XLS, XLSX, CSV) · PPT viewer (PPT, PPTX)
· HWP / HWPX (Hangul) documents
· TXT · RTF · HTML · EPUB · ODT · ODS · ODP · images (JPG, PNG, WEBP, HEIC) · documents inside ZIP files
· Open straight from file managers, email and chat apps with "Open with" or Share

■ Find documents on your device
· At first launch, DocuOne finds PDF, Word, Excel, PPT and HWP files on your phone and sorts them by type and folder
· Downloads and messenger folders at a glance — tap to open
· Only if you allow it · files are read-only (never moved or deleted)

■ Comfortable reading
· Pinch out to zoom in, pinch in to zoom out · double-tap for 2×
· Continuous scroll · single page · two-page view · page grid · bookmarks
· Remembers where you left off · tap once for full-screen reading
· Night mode · dark theme · text size

■ Search & OCR text recognition
· Search file names and the text inside PDF, Word and Excel files
· Find in document with matches highlighted right on the page
· OCR makes scanned PDFs and photos searchable
· English and Korean OCR

■ PDF editor
· Long-press for 3 seconds to enter edit mode — place text anywhere, drag to move, resize freely
· Pen · highlighter · notes · shapes · check marks · dates
· Sign PDFs with your handwritten signature
· Replace or erase text in scanned pages
· Reorder, rotate, delete, duplicate and extract pages
· Merge PDF · split PDF · compress PDF
· Auto-redact personal information

■ PDF converter
· Images to PDF (many at once)
· Word, Excel, PPT, HWP and TXT to searchable PDF
· PDF to JPG · PDF to Word / Excel
· Print and share

■ Document scanner
· Automatic edge detection, perspective correction and shadow removal
· Receipt, business card, ID, book and whiteboard modes
· Scan to searchable PDF with OCR

■ Your originals stay safe
· Imported files are kept exactly as received — you always edit a copy
· Version history with one-tap restore
· Deleted documents stay in the trash for 30 days

■ Smart folders
· Contracts · receipts · tax · finance · school · work · travel · personal
· DocuOne suggests a folder and asks first — nothing moves without you

■ AI only when you need it
· Summarize · ask your document · extract dates, amounts and contacts · compare documents
· Answers come only from what the document says — no legal, medical or financial advice

■ Privacy first
· Opening, search, editing, conversion, OCR and AI all run on your phone
· Documents are never uploaded · no sign-up
· App lock (PIN) · screenshot blocking

■ Free & PRO
· Free: view every document · pinch to zoom · bookmarks · file-name search · device document finder
· PRO: editing · search inside documents (OCR) · signatures · redaction · PDF to Word/Excel · no ads
· Ads appear only at the bottom of Home and Tools — never while you read or edit
· Cancel your subscription anytime in Google Play

■ FAQ
· Does it open HWP files? — Yes, you can view the text and tables of HWP and HWPX documents. Complex layouts may look simplified.
· Does it work offline? — Yes. Viewing, editing and OCR work without internet.
· Will my original file change? — No. Edits are made on a copy.

Contact: mingtoki@gmail.com
Privacy policy: https://docuone.justgets.com/en/privacy