Duna's AI Scanner vs PaperGuard

Duna AI Scan is the fastest, most private way to scan and organize your documents on iPhone. Point your camera, capture, done. Built-in AI auto-detects edges, removes shadows, sharpens text, and runs OCR locally — without uploading anything to a server. WHY DUNA • Lightning-fast capture with auto edge detection and perspective correction • Import existing photos from your library — same Magic Filter & OCR as a fresh capture • Add pages to any document later, from the camera or your photo library • Magic Filter v2 with shadow removal — clean scans even under uneven lighting • On-device OCR (text recognition) in English and Vietnamese • Smart auto-tagging: invoices, receipts, ID cards, contracts, business cards • Auto-extract key fields: vendor, total amount, date, tax ID, due date, notes • Multi-page documents with reorder, rotate, crop, and re-shoot per page • PDF export, deterministic file naming, and clean folder organization PRIVATE VAULT • Tap to lock any document with AES-256-GCM encryption • Unlock with Face ID, Touch ID, or your own passphrase • Blurred thumbnails so sensitive docs never preview accidentally • Anti-screenshot redaction on the lock screen • Encryption keys stored in iCloud Keychain — your private documents follow you across devices, encrypted end-to-end ZERO BACKEND, FULL SYNC • Documents sync via your own iCloud account (CloudKit Private Database) • Nothing ever touches our servers • Sign in with Apple — no email, no password, no tracking BUILT FOR PROFESSIONALS • Send any document JSON payload to your own webhook (Gateway tab in Settings) • Deterministic JSON Schema v1 — perfect for accounting and ERP automation • Future-ready for team workflows and BizConnex integration PRIVACY FIRST • OCR runs entirely on-device using Apple's Vision framework • AI extraction uses Apple Intelligence (on supported devices) — never leaves your iPhone • No analytics, no third-party tracking SDKs, no behavior profiling • Banner ads are clearly labeled and respect App Tracking Transparency ACCESSIBILITY • Dynamic Type • Full VoiceOver support on all primary screens • Reduce Motion respected REQUIREMENTS • iPhone running iOS 17 or later • iCloud account (optional, for sync) • Apple Intelligence (optional, for advanced field extraction on iPhone 15 Pro and newer) QUESTIONS? hoainam8x@gmail.com PRIVACY POLICY: https://hoainam8x.github.io/ai-scanner/privacy TERMS OF SERVICE: https://hoainam8x.github.io/ai-scanner/terms

Most scanner apps upload your ID, your lease and your payslips to someone else's server. PaperGuard has no server to upload them to — scanning, OCR and document intelligence all run on your iPhone. Free forever for unlimited scans, with no watermark and no ads. TURN PAPER INTO CLEAN PDFs Point the camera and PaperGuard finds the page edges, straightens the perspective and cleans up the result. Scan a single page, a whole contract, or use Batch Scan to shoot page after page without stopping. Reorder, crop and retake before you save, then export a sharp multi-page PDF. IT READS WHAT IT SCANS On-device text recognition turns every scan into searchable text. PaperGuard also recognizes what kind of document it is looking at — invoice, receipt, contract, ID — and pulls out the amounts and dates that matter. Ask a plain question about a document and get the answer straight from the page. No cloud AI is involved at any point. SIGN WITHOUT PRINTING Draw your signature once, then place it on any document with a tap. Annotate, highlight and fill in what you need, then send a finished PDF. The printer stays in the closet. LOCKED BEHIND FACE ID Turn on the Vault and PaperGuard asks for Face ID before showing anything — after a restart, after switching apps, every time. Content blurs the moment you leave the app. Face ID is handled by iOS itself; if it fails, your device passcode gets you in. FINDS THINGS AGAIN Folders, tags and full-text search across everything you have scanned, right inside the app. Documents show up in iPhone search by their title as well, and you can optionally have their text appear as a preview in the result. Identity cards and passports never leave the title, whatever you choose. PRIVACY THAT IS ARCHITECTURE, NOT A PROMISE There is no account, no login and no server. Your documents, images, recognized text and settings never leave your device, because there is nowhere for them to go. No analytics, no advertising, no tracking SDKs. Put your iPhone in airplane mode and every feature above still works — that is the test we would like you to run. FREE Unlimited scanning, no watermark, no ads. PDF export, one folder, one saved signature, three tags and a preview of recognized text. PAPERGUARD PRO Full recognized text and search inside your scans, Document Intelligence, Quick Answers, unlimited folders, signatures and tags, and batch export. Yearly at USD 14.99 with a 7-day free trial, or monthly at USD 2.99. Prices in your local currency are shown in the app. Payment is charged to your Apple Account at confirmation. A subscription renews automatically unless it is cancelled at least 24 hours before the current period ends; manage or cancel it in iOS Settings, Apple Account, Subscriptions. Any unused part of a free trial is forfeited when a subscription is purchased. Privacy Policy: https://bytechimera.com/apps/paperguard/privacy Support: https://bytechimera.com/apps/paperguard/support