Drawboard PDF vs KDAN PDF

Drawboard PDF is a cross-device tool for marking up, reviewing, signing and sharing PDFs. It runs on the web, Windows, macOS, iOS and Android, with a Chrome extension, and lists text editing, annotation, OCR and PDF conversion. Markup options include a pen, highlighter, shapes, text review, signatures, images and audio notes. Smart ink recognition can convert freehand lines and shapes into geometric forms. On iOS and macOS, users also get calibrated length and area measurement, polylength, a protractor and a ruler. Document tools include merging and splitting PDFs, adding hyperlinks, applying tags and viewing separate documents in different windows. Shared files support live or asynchronous collaboration, with unlimited contributors on the free tier. Drawboard AI can summarize or rephrase selected text, define words, translate and correct grammar; its privacy policy says only selected text goes to OpenAI when invoked. The Free plan is free and includes 10 cloud documents, 40 MB per document and real-time sync. A 7-day trial is also listed.

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.