OpenHTML vs ShelfCheck Pro

OpenHTML is a private, on-device viewer for HTML, Markdown, ZIP web projects and source files on iPhone and iPad. Open files from Files, Mail, chat apps, AI tools or Safari. Preview pages offline, inspect what went wrong when a file does not render, and export finished pages when you need a clean copy. What you can do: - Open .html, .htm, .xhtml and Markdown files - Import ZIP archives and multi-file web projects - Render LaTeX math in Markdown offline, with no scripts - Preview local pages with network access off by default - Diagnose missing files, blocked resources and JavaScript issues - View JSON, XML and source files with a code-friendly reader - Export full pages to PDF or long images with OpenHTML Pro - Keep selected files in your OpenHTML folder in iCloud Drive and open them on your other devices with OpenHTML Pro Private by default: OpenHTML has no accounts, no analytics and no ads. Files are copied into the app's private storage and stay on your device unless you add them to your own OpenHTML folder in iCloud Drive. Remote resources stay blocked unless you choose to allow them for a trusted document. OpenHTML is designed for developers, students, researchers, writers and anyone who receives HTML reports, AI-generated pages, saved webpages or packaged web projects and wants to inspect them safely on iOS.

Never buy the same book twice. ShelfCheck is the fastest way to check if you already own a book before you buy it. Just point your iPhone at the barcode, and in under a second you get a clear answer: red for owned, green for new, amber for a possible different edition. Built for book collectors, avid readers, and anyone who has ever come home from a bookstore only to realize they already had that book on the shelf. KEY FEATURES Instant Duplicate Check Scan any ISBN barcode and get immediate feedback. Three-layer matching checks exact ISBN, title and author fuzzy match, and online database lookup to catch duplicates even across different editions. Works Offline No Wi-Fi at the used book sale? No problem. ShelfCheck checks your entire local library instantly without an internet connection. Online metadata lookup happens in the background when you are back online. Zero Friction No account to create, no cloud service to sign up for, no social features to distract you. Open the app and start scanning. Your data stays on your device. Continuous Scan Mode Toggle continuous mode to scan dozens of books in minutes. Each scan shows instant feedback and automatically moves to the next. Perfect for cataloging an entire bookshelf or browsing a library sale. Your Book Library Browse all your books in a clean list view. Search by title, author, or ISBN. Sort by date added, title, or author. Filter by tags to find any book in seconds. Book Details and Notes Tap any book to see full details including cover, publisher, page count, and more. Add personal notes, mark books as read, and track which books you have lent out and to whom. Custom Tags and Lending Tracker Organize your collection with custom tags. Track lent books with borrower name and date. Never lose track of who has your favorite novel again. CSV Export Export your entire library as a CSV file for backup or import into other tools. Your data, your way. Manual Book Entry No barcode? No problem. Add books manually by entering the title, author, and ISBN. The app will still check for duplicates and look up metadata automatically. Smart ISBN Handling Automatically normalizes ISBN-10 and ISBN-13 formats. Handles hyphens, spaces, and prefix variations so you never miss a match. Default Shelf Location Set a default shelf location in Settings so every new book is automatically assigned to the right spot on your bookshelf. PRIVACY FIRST ShelfCheck collects no personal data. No analytics, no tracking, no third-party sharing. Your book library is your business. FREE TO USE Scan and check books with no limits. Store up to 50 books for free. Upgrade to Pro for unlimited books, continuous scan, custom tags, lending tracker, and CSV export. PRO SUBSCRIPTION Unlock the full power of ShelfCheck with a Pro subscription: - Monthly: $1.99/month - Yearly: $9.99/year (58% savings) - Lifetime: $19.99 one-time purchase All Pro plans include a 7-day free trial (monthly and yearly). SUBSCRIPTION INFORMATION: - Payment will be charged to your Apple ID account at confirmation of purchase. - Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. - You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription.