Comparison

PDF Locker vs AppMock3D

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

Head to head
About

PDF Locker

Features
Read full description

PDF WOLF lets you add password protection to any PDF, directly on your device. No cloud uploads. No accounts. No servers involved. Your files stay private from start to finish. HOW IT WORKS Import any PDF from Files, iCloud Drive, or any app on your device. Choose to generate a cryptographically strong random password automatically, or enter your own. PDF WOLF applies industry-standard PDF encryption on-device, then verifies the result before presenting it to you. Once protection is complete, you can preview the result. Saving the protected PDF to Files or sharing it directly requires a Pro plan. WHAT YOU GET โ€” Import any PDF from Files or iCloud Drive โ€” Generate a strong random password with one tap โ€” Enter and confirm your own password manually โ€” On-device encryption โ€” your PDF never leaves your iPhone or iPad โ€” Verification step confirms encryption worked before you save โ€” Password vault: all passwords stored securely in your device's Keychain โ€” Reveal, copy, or reference any saved password from the Passwords tab โ€” Protection history with thumbnail previews of past protected files โ€” Save protected PDFs directly to Files (Pro) โ€” Share protected PDFs via AirDrop, Mail, Messages and more (Pro) PRIVACY FIRST PDF WOLF uses no analytics, no tracking, and no advertising SDKs. It communicates only with Apple's App Store to process purchases. Everything else happens entirely on your device. PRO PLAN A Pro plan (Weekly or Lifetime) unlocks the ability to save protected PDFs to the Files app and share them via the iOS share sheet. The protection process itself can be experienced before purchasing โ€” Pro gates only the final file delivery. Passwords are stored in your device's Keychain, the same secure storage used by banks and password managers. PDF WOLF never sees or stores your passwords on any server. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://1kbapps.com/pdfwolf/

About

AppMock3D

Features
Read full description

With AppMock3D, you can create professional-quality mockups in seconds by displaying images on realistic 3D device models. Simple to use. 1. select an image from your photo library 2. select a device model 3. Adjust the angle and size in 3D 4. set background and lighting 5. save in high quality

Screenshots

PDF Locker4 screens
AppMock3D3 screens

Verdict

The call

The clearest difference is in-app purchases: AppMock3D at none against PDF Locker's 3. AppMock3D also leads on update cadence (every 8 days vs every 5 months). PDF Locker's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PDF Locker sells 3 in-app purchases, starting at $4.99 per 7 days. AppMock3D asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Locker ships an update every 5 months, AppMock3D every 8 days. Both last shipped on October 10, 2026.

Scorecard3 real differences ยท 3 level
PDF Locker versus AppMock3D: the parameters behind the verdict, then further details
ParameterPDF LockerAppMock3D
PriceFreeFree
Update frequencyEvery 5 monthsEvery 8 days โ€” better
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 โ€” better18.5
Further details โ€” not scored
Size3 MB36 MB
Age rating4+4+
DeveloperVikram Singhshogo isaji

In-app purchases

3 purchases

PDF Locker

Subscriptions2
  • Mobile Pro Access Weekly$4.997 Days
  • Mobile Pro Access Yearly$19.991 Year
One-time1
  • Pro Lifetime Unlock$19.99
None

AppMock3D

No in-app purchases

Questions

Is PDF Locker free?
PDF Locker is free to download, with in-app purchases available.
Is AppMock3D free?
AppMock3D is free to download, with no in-app purchases.
Do PDF Locker or AppMock3D have ads?
AppMock3D shows ads; PDF Locker does not.
Which is updated more often, PDF Locker or AppMock3D?
PDF Locker ships an update every 5 months, and AppMock3D every 8 days. Most recently, PDF Locker was updated on October 10, 2026 and AppMock3D on October 10, 2026.

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