🔒
📱 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 Free 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 · 3 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 Free 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 3 unlocks a day at no cost. Pro unlocks everything.

Free

$0 / forever

No credit card required

  • ✅
    3 PDF unlocks per day
  • ✅
    PDF History — last 3 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 Free for free. No account, no upload, no compromise on privacy.

🍎
Download on the App Store

Free · iOS 17+ · iPhone & iPad