Comparison

Unlock PDF vs SmartDecrypt PDF ZIP

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Unlock PDF

Easily access password-protected documents with this secure tool. It instantly unlocks encrypted PDFs, removes restrictions, and allows quick export and sharing of your files. Works offline for enhanced privacy and features a user-friendly interface with dark mode support.

Highlights
  • Unlock password-protected PDFs
  • Remove PDF restrictions
  • Export and share unlocked files
  • Offline functionality
  • User-friendly interface
  • Dark Mode support
Read full description

Welcome to Unlock PDF - Password Remover, the simple and secure way to access your locked documents. With Easily Open Encrypted PDFs, you can unlock password-protected files instantly, remove restrictions, and save time by skipping repeated password input. Whether you need to view, edit, or share important files, Unlock PDF - Password Remover makes PDF decryption fast and reliable. KEY FEATURES • PDF unlocker, remover, decryption tool, and secure solution in one app • Open password-protected or encrypted PDF files in just a few taps • Export and share unlocked PDF documents quickly • Manage the history of imported and opened PDFs • Works offline for privacy and security • Clean, user-friendly interface with full Dark Mode support • Lightweight app size under 100MB HOW IT WORKS • Launch the app and import a locked or encrypted PDF • Import from cloud drives using the native Files app • Unlock and export your PDF instantly • Share unlocked files with colleagues, friends, or across devices AUTO-RENEW SUBSCRIPTION TERMS • Subscription auto-renews unless canceled, charged via your Apple ID • Pricing may vary based on your region • No commitment; cancel anytime • Payment will be charged to your iTunes Account at confirmation of purchase • Subscription durations: 1 week and 1 year • Renewal is charged within 24 hours prior to the end of the current period • Manage or cancel via Account Settings on the App Store • Unused portion of a free trial (if offered) will be forfeited when a subscription is purchased POLICY & TERMS • Privacy Policy: https://www.envisiontechnolabs.com/privacy_policy.html?utm_source=unlock_pdf_ios&utm_medium=app_store_connect&utm_campaign=policy_url • Terms of Service: https://www.envisiontechnolabs.com/terms.html?utm_source=unlock_pdf_ios&utm_medium=app_store_connect&utm_campaign=term_url SUPPORT We’re continuously improving Unlock PDF - Password Remover to give you a faster and more secure way to open encrypted files. Your feedback helps us build a better tool for managing PDFs. If you have any questions or suggestions, contact us at: support@envisiontechnolabs.com

About

SmartDecrypt PDF ZIP

Features
Read full description

SmartDecrypt helps you unlock password-protected PDFs and archives without hunting through notes, messages, or old emails for the right password. Save a pattern once, such as a bank statement or invoice filename format, and SmartDecrypt can match future files automatically. Passwords with Chinese, Japanese, and Korean characters are now fully supported. On iPhone and iPad, open files from the app or send them through the iOS Share Sheet from Files, Mail, or other apps. Features: - Unlock password-protected PDF files. - Extract ZIP and 7z archives. - Save password patterns for recurring files. - Share files directly to SmartDecrypt from iOS. - Supports UTF-8 passwords including CJK characters. - Process one file at a time for free. - Upgrade once to unlock batch file loading and automatic password cycling. - Keep passwords in the system Keychain. - Interface available in 11 languages. SmartDecrypt is designed for files you already have permission to access. It does not bypass unknown passwords. SmartDecrypt Pro is a one-time universal purchase. Buy once and unlock Pro on both iOS and macOS with the same Apple ID.

Screenshots

Unlock PDF3 screens
SmartDecrypt PDF ZIP4 screens

Verdict

The call

The clearest difference is update cadence: SmartDecrypt PDF ZIP at every 4 weeks against Unlock PDF's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Unlock PDF sells 4 in-app purchases, starting at $0.99 per 7 days and SmartDecrypt PDF ZIP sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Unlock PDF ships an update every 2 months, SmartDecrypt PDF ZIP every 4 weeks. The most recent releases landed on July 5, 2026 and September 14, 2026 respectively.

Scorecard1 real difference · 9 level
Unlock PDF versus SmartDecrypt PDF ZIP: the parameters behind the verdict, then further details
ParameterUnlock PDFSmartDecrypt PDF ZIP
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS16.016.0
Further details — not scored
Size33 MB8 MB
Age rating4+4+
DeveloperAshvin AjadiyaKIEN WEI CHOO

In-app purchases

4 purchases

Unlock PDF

Subscriptions3
  • Unlimited Access - Weekly$0.997 Days
  • Unlimited Access - Monthly$2.991 Month
  • Unlimited Access - Yearly3 Days trial$14.991 Year
One-time1
  • Unlimited - Unlock PDF$49.99
2 purchases

SmartDecrypt PDF ZIP

One-time2
  • 7-Days TrialFree
  • SmartDecrypt Premium$9.99

Questions

Is Unlock PDF free?
Unlock PDF is free to download, with in-app purchases available.
Is SmartDecrypt PDF ZIP free?
SmartDecrypt PDF ZIP is free to download, with in-app purchases available.
Do Unlock PDF or SmartDecrypt PDF ZIP have ads?
Neither Unlock PDF nor SmartDecrypt PDF ZIP shows ads.
Which is updated more often, Unlock PDF or SmartDecrypt PDF ZIP?
Unlock PDF ships an update every 2 months, and SmartDecrypt PDF ZIP every 4 weeks. Most recently, Unlock PDF was updated on July 5, 2026 and SmartDecrypt PDF ZIP on September 14, 2026.

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