KDAN PDF vs ONLYOFFICE PDF Editor

KDAN PDF is a PDF app for Android, iOS, Mac and Windows, with tools for viewing, annotation, editing and conversion. The free plan includes viewing, notes and annotations, handwriting, signatures and form filling, but not text editing, form creation, OCR or PDF conversion. Document 365 costs USD 59.99 per year and adds text editing, merging and splitting, Office file conversion, OCR for scanned PDFs and password protection. Document 365 AI+ costs USD 99.99 per year and includes those features plus AI services such as auto-redaction, summarization, document review and paragraph translation. Both subscriptions offer a seven-day free trial. A lifetime license costs USD 119.99 per device and covers one desktop device, with offline work that does not require cloud uploads. Paid plans provide read-aloud text-to-speech. Refunds may be requested within 14 days after purchase, subject to store exclusions. KDAN PDF is powered by KDAN Mobile Software Ltd., founded in 2009 and based in Tainan City, Taiwan.

ONLYOFFICE PDF Editor lets users view, edit, annotate, create, and convert PDF files to DOCX online. It can revise text and insert or adjust tables, shapes, images, SmartArt, charts, hyperlinks, and pages. Annotation tools include highlighting, underlining, strikethrough, comments, freehand drawings, and stamps. Users can create and fill forms with text areas, images, combo boxes, drop-down lists, and check boxes. Teams can co-edit in real time or paragraph-locking mode and use comments, built-in chat, Telegram, and Jitsi calls. The editor can extract text from scanned PDFs, connect AI assistants, and permanently remove selected material with redaction. Free desktop apps support offline editing and conversion on Windows, Linux, and macOS; free Documents apps support PDF viewing on iOS and Android. It is available on web, Windows, Linux, macOS, iOS, Android, and self-hosted deployments. A free plan and trial are listed, with paid pricing from $20/mo. Security options include AES-256 encryption, JWT access protection, granular permissions, and restrictions on downloading, printing, and copying.