🔒
📱 Available on iPhone & iPad

Unlock & Lock PDFs
Right on Your iPhone

Remove password protection from any PDF — or add one. Everything happens on your device. No uploads, no accounts, no compromises.

  Download on App Store See Features →

Free to start · iOS 17+ · iPhone & iPad

🛡️ 100% On-Device
☁️ No Uploads Ever
🔐 No Account Required
⚡ Instant Processing
iOS 17+

Features

Everything you need for PDF security

Simple, fast, and completely private. PDF Lock: Unlock & Protect handles all your PDF password needs without leaving your device.

🔓

Unlock PDF

Remove password protection from any PDF in seconds. Open, edit, and share your PDF freely after unlocking.

Free · 3/day
🔒

Lock PDF

Add password protection to any PDF file. Secure sensitive documents before sharing with anyone.

Pro Only
📂

PDF History

Access your recently processed PDFs anytime. Tap to re-open any file directly from your history list.

Free · 2 PDFs
⚡

Instant Processing

PDFs are processed in milliseconds using iOS's built-in PDF engine. No waiting, no loading bars.

All Users
📤

Easy Export

Share processed PDFs directly to Files, Mail, WhatsApp, or any other app using the native iOS share sheet.

All Users
🔍

PDF Viewer

Preview any processed or history PDF inside the app before exporting. Full-page continuous scroll.

All Users

How it works

Three steps. That's it.

No complicated setup. No account creation. Just open the app and go.

1

Select your PDF

Pick any PDF from Files, Mail, or other apps using the iOS file picker.

2

Unlock or Lock

Enter the current password to unlock, or set a new one to lock your PDF.

3

Export & Share

Save the processed PDF to Files or share it instantly with anyone.

Privacy First

Your PDFs never leave your device

We built PDF Lock: Unlock & Protect with privacy as a core feature, not an afterthought.

📵

Zero Uploads

PDF files are processed locally using iOS's PDFKit. They are never sent to any server.

🙅

No Account Needed

Download and start using immediately. No sign-up, no email, no password to remember.

📊

No Tracking

No analytics SDKs, no ad networks, no cross-app tracking. We don't monitor how you use the app.

🔑

Secure Keychain

Usage counters are stored in Apple's Keychain. Your PDF passwords are never stored by us.

Pricing

Start free. Upgrade when you need more.

Free users get 2 unlocks a day at no cost. Pro unlocks everything.

Free

$0 / forever

No credit card required

  • ✅
    2 PDF unlocks per day
  • ✅
    PDF History — last 2 files
  • ✅
    PDF Viewer & Export
  • 🔒
    Lock PDF (Pro only)
  • 🔒
    Unlimited unlocks (Pro only)
  • 🔒
    Full history — 15 PDFs (Pro only)
⭐ Most Popular

Pro

$2.99 / mo

Billed monthly

$14.99 / year

Save 58%

  • ✅
    Unlimited PDF unlocks
  • ✅
    Lock PDF — add password protection
  • ✅
    PDF History — last 15 files
  • ✅
    PDF Viewer & Export
  • ✅
    Priority support
  • ✅
    All future Pro features

Subscriptions managed via Apple's App Store. Cancel anytime in iOS Settings.

Start protecting your PDFs today

Download PDF Lock: Unlock & Protect for free. No account, no upload, no compromise on privacy.

Download on the App Store

Free · iOS 17+ · iPhone & iPad