AutoSignMark: PDF Assistant is a productivity app developed by CHUNG CHENG CHIU.
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App Information
AutoSignMark: PDF Assistant is FREE to download. The download size is 13.70 MB. The latest version available is 2.1.1. The last update was on August 5, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since June 2026.
Description
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.
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.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
