# AutoSignMark: PDF Assistant — PDF sign, markup & merge > PDF sign, markup & merge (iPhone/iPad app by CHUNG CHENG CHIU.) - Source: https://appshunter.io/ios/app/autosignmark-pdf-assistant/id6755278927 (this page in markdown: same URL + `.md`) - Developer: [CHUNG CHENG CHIU](https://appshunter.io/developer/1852932294) - Category: Productivity, Business - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.6 · 14 MB - Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan) - Released: 2026-06-08 - Data updated: 2026-08-10 - User reviews in markdown: https://appshunter.io/ios/app/autosignmark-pdf-assistant/id6755278927/reviews.md ## What is AutoSignMark? AutoSignMark is a fast, private PDF editor for iPhone, iPad, and Mac. Sign documents, mark them up by hand or with text, stamp your signature, merge files, and save — all on device, with no account required. Requires iOS/iPadOS 17.6 or later, or macOS 14.6 or later. One purchase unlocks all three platforms with the same Apple ID. FREE TO USE • Open and view PDF, JPG, PNG, and HEIC files • Open password-protected PDFs (enter the password to unlock) • Zoom, rotate, and navigate pages • Paste a URL to download and open a PDF • Scan documents with the camera (iPhone/iPad) PRO FEATURES • Freehand drawing with adjustable color and thickness (Apple Pencil supported on iPad) • Add text boxes with custom color and size • Save and reuse your signature; import an image as a stamp with automatic background removal • Eraser to remove annotations • Markup Presets: save a markup layout once and apply it to similar documents • Merge multiple PDFs and photos into one file; convert photos to PDF • Save (overwrite) or Save As (export a clean, password-free copy) • Export pages as JPG images • Quick Passwords: store frequently used passwords and auto-try them on encrypted PDFs • Export and import your templates and signatures as a backup PRIVATE BY DESIGN AutoSignMark does not collect, track, or sell any data. Your files, signatures, and settings stay on your device. There is no analytics, no advertising, and no third-party SDKs. The app connects to the internet only when you explicitly download a PDF. PRICING Start with a 7-day free trial that unlocks all Pro features. After the trial, keep Pro with an Annual subscription or a one-time Lifetime purchase. Free viewing features remain available without a purchase. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ The developer provides a software tool only and does not participate in, monitor, or endorse any specific use by the user. The user bears sole responsibility for any dispute or liability arising from improper use. Stamps and signatures produced by this app are image files and are not electronic or digital signatures under applicable law. ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | AutoSignMark Pro Annual | $29.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | AutoSignMark Pro Lifetime | $79.99 | one-time | ## Version history (last 5 releases) ### 2.1.1 — 2026-08-05 Fixed occasional freezes and crashes when deleting pages. If you find AutoSignMark useful, a rating would mean a lot to an indie developer. Thank you! ### 2.1 — 2026-07-26 Auto-Unlock — Major Fixes ・Fixed encrypted PDFs still prompting for a password when opened from the Files app or Share Sheet; auto-unlock now works reliably on cold start. ・Files that can't be read (corrupted, or not yet downloaded from iCloud) now show a clear message instead of an incorrect password prompt. Stamp Background Removal ・White-background removal is now applied consistently to both red and blue stamps, fixing intermittent results. Other ・Auto-unlock with saved passwords is now enabled by default. ・Various refinements and stability improvements. ### 2.0 — 2026-07-13 AutoSignMark 2.0 — our biggest update yet. WHAT'S NEW • Full-text search (free) Type a keyword and every match is highlighted in yellow, with next/previous jumping. No more scrolling page by page to find a clause, an amount, or a name. • Form filling Received an interactive PDF form (insurance application, bank form, government paperwork)? Just tap the fields: type in text fields, tick checkboxes, pick from dropdowns. Your entries are saved as real form values — visible in Adobe or on any computer. • Text markup: highlight, underline, strikethrough Drag across text and the mark snaps to the lines — straight and tidy every time. • Compress PDF Three quality presets (High quality / Balanced / Smallest). Turn a bulky scan into an email-friendly file in one tap, and see "original size → new size" right away. • Set password & Save As You can now ADD a password to a PDF that doesn't have one. Export an encrypted copy — and optionally save the password to your Quick Passwords. • Remove an applied Markup Preset Sent a marked-up file out for signing? When it comes back, clear that whole set of marks in one tap — your signatures stay untouched. • Split PDF & Export flattened copy Split every N pages into separate files, or burn your signatures into the page so the recipient can't move or delete them. • Recent Files (free) Your recently opened documents are listed on the home screen — one tap to reopen. IMPROVEMENTS • Auto-unlock encrypted PDFs with your saved passwords — no more picking one by hand. • Thumbnails are now hidden by default on iPhone for a cleaner reading view (iPad and Mac still show them). • New "Check for Updates" in Settings. • Extensive stability and performance work, plus a fix for toolbar buttons that could be cut off on iPad. ### 1.1.0 — 2026-07-01 What's New: • Auto-unlock encrypted PDFs When you open a password-protected PDF, the app automatically tries your saved quick passwords and opens it as soon as one works — no more picking a password by hand. If none match, you'll be prompted to enter one. (Can be turned off in Quick Password settings.) • Remove an applied Markup Preset in one tap After applying a Markup Preset, clear that whole set of freehand and text marks at once to tidy up your document — your signatures and stamps are always kept. Perfect for the "mark it up, send it out, get it signed, then clean up" workflow. • A cleaner reading view on iPhone Thumbnails are now hidden by default when you open a PDF on iPhone (tap to bring them back anytime). iPad and Mac keep showing them. • Other refinements and stability improvements. ### 1.0.4 — 2026-06-24 What's New Take another pass at it - One-Tap Open after Sharing: Share a PDF to AutoSignMark and get an instant notification — tap it to open the file and start editing right away, with no need to switch back to the app manually. - Your existing share and URL-download workflows are fully preserved. Tip: Please allow notifications when prompted to receive the "file ready" alert. ## Apps similar to AutoSignMark | App | Rating | Price | Category | | --- | --- | --- | --- | | [業務人脈王](https://appshunter.io/ios/app/id1037734276) | — | Free | Productivity | | [PDFW: E-Signature & Sign PDF](https://appshunter.io/ios/app/pdfw-e-signature-and-sign-pdf/id6757133828) | — | Free | Productivity | | [BulkCert: Certificate Maker](https://appshunter.io/ios/app/bulkcert-certificate-maker/id6787418857) | — | Free | Productivity | | [PDF Fill & Sign Editor](https://appshunter.io/ios/app/pdf-fill-and-sign-editor/id6760207942) | — | Free | Productivity | | [BeeCamera](https://appshunter.io/ios/app/beecamera/id6742135942) | — | Free | Productivity | | [Counter-Plan-todo-tasbih-count](https://appshunter.io/ios/app/counter-plan-todo-tasbih-count/id6762558902) | 4.5 (2) | Free | Productivity | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-10.*