Curtain: Redact Personal Data

Curtain is a privacy tool designed to detect and mask the personal data in your documents — entirely on your device — before you share them or send them to an AI. Names, ID numbers, IBANs, phone numbers, addresses and dozens of other data types are found and covered automatically, and your documents never leave your phone. KEY FEATURES: • On-Device Masking: Detection, masking and OCR all run locally. No servers, no account, no tracking — it even works in airplane mode. • 100+ Data Types: National IDs, tax numbers, IBANs, credit cards, phones, emails, addresses, plates, IMEIs and many more are recognized automatically. • Ready-Made Profiles: Pick the right fields in one tap for legal, finance, health, technical and more. • Safe AI Workflow: Real data turns into reversible labels. Paste the masked text into any AI app, then restore the original values with one tap — the mapping never leaves your device. • Flexible Methods: Choose per item how to hide each value: label, mask, partial reveal, redact or hash. • Import Anything: Paste text, open a PDF, scan with the camera, or send from any app via the Share sheet. • Export & Share: Copy the masked text or export it as PDF/TXT, fully masked. • Private by Design: No ads, no third-party analytics, no data selling. The only sensitive item kept on device is a label map that only you can decode — delete it anytime. • Modern, Fast Interface: A clean, distraction-free design with full light/dark support. Protecting the personal data in your documents is now in your pocket. Download Curtain and share with confidence! Privacy Policy & Terms of Use: https://github.com/cevdetcancetin/Curtain Curtain is an assistive tool and does not provide legal advice.