ZenPDF vs Notes Index

ZenPDF is the all-in-one PDF toolkit that works completely offline. No account, no sign-up, no cloud uploads -- your files never leave your iPhone. Whether you're a student organizing notes, a professional handling contracts, or just trying to secure a document with a watermark, ZenPDF gives you every essential PDF tool in one clean, fast app. EVERY TOOL YOU NEED - Merge PDF -- Combine multiple PDFs into a single document. Reorder them exactly how you want before merging. Your original text and quality are preserved. - Compress PDF -- Shrink large PDFs to share them easily. Smart compression optimizes embedded images while keeping your text crisp and selectable. Pick the level that fits. - Edit Metadata -- View and update PDF document properties like Title, Author, Subject, and Keywords in a clean form. - Add Watermark -- Secure your documents with professional text watermarks on all pages. - Image to PDF -- Turn photos, screenshots, and pictures into a polished PDF in seconds. - Scan to PDF -- Use your camera to capture physical documents and save them straight to PDF. - Split PDF -- Pull out single pages or page ranges from any document. - Rotate Pages -- Fix sideways or upside-down pages, all at once or one at a time. - Built-in PDF Viewer -- Open and review your results without leaving the app. WHY ZENPDF - 100% offline -- everything is processed right on your device - No account, no login, no cloud - Text stays text -- we never flatten your PDF into a blurry image - Fast -- heavy work runs in the background so the app never freezes - Unlimited use -- no caps on how many files you merge, scan, or convert - Clean, modern interface with light and dark mode Your documents are yours. ZenPDF processes files locally and never sends their contents anywhere. Download ZenPDF and take control of your PDFs today.

Notes Index turns your handwritten notes into a library you can search. Scan a notebook page or loose sheet with the built-in document scanner, or bring in a photo you already took. Notes Index cleans up the page, recognizes your handwriting on the device, and files it by date. FIND ANY PAGE Search for a word you wrote and Notes Index highlights exactly where it appears on the page. BROWSE LIKE PAPER Pinch through your library from a full-width page down to a dense grid. On iPad, open two pages side by side, like an open notebook. MARK IT UP Write on your pages with Apple Pencil or your finger, and recrop a page any time. PRIVATE BY DESIGN No account and no ads. Text recognition happens on your device. Turn on iCloud sync to keep your library on all your devices, stored in your own iCloud account. Export your images and text whenever you like.