Comparison

Avi Pdf Pro vs PDF Watermark Assistant

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

Head to head
About

Avi Pdf Pro

This utility app offers a comprehensive suite of tools for managing PDF files. Easily create, merge, lock, unlock, and watermark PDFs using images or your phone's camera. Your files are processed securely and deleted from servers after completion.

Highlights
  • Create PDF files
  • Merge PDF files
  • Lock PDF files
  • Unlock PDF files
  • Watermark PDF files
  • Use phone images or camera
Features
Read full description

Free and easy to use complete PDF toolkit with functions to create, merge, lock, unlock, watermark PDF files using images from your phone or phone camera. This tool does not store your files on our server longer than needed. All files will be deleted from our server after process completes.

About

PDF Watermark Assistant

Features
Read full description

PDF Watermark Assistant — Your Professional PDF Watermarking Tool Need to add anti-counterfeiting marks to important documents? Or want to stamp your work with your exclusive brand? PDF Watermark Assistant focuses on providing you with the ultimate custom watermark experience. Say goodbye to cookie-cutter fixed templates and take control of every detail of your watermark! [Fully Customizable Watermarks] Provides comprehensive and in-depth watermark parameter configurations without missing a single detail. All parameters are open for free adjustment, allowing the watermark to perfectly fit your document needs and creating a unique, exclusive watermark effect. · Font Size Support Whether you need an eye-catching warning watermark or a low-key, subtle identifier, you can freely set the font size to meet the visual presentation needs of different document scenarios. · Text Color & Opacity Adjustment Choose your exclusive text color at will to match your corporate brand image or personal preference; precisely adjust the watermark opacity to effectively declare copyright without blocking the main text content, achieving a perfect balance between protection and readability. · Precise Rotation Control Supports custom watermark tilt angles, making it easy to achieve the classic diagonal full-page anti-counterfeiting effect. Precise angle control makes the layout more professional and standard, giving you peace of mind against unauthorized copying. · Line & Letter Spacing Adjustment Say no to cluttered or sparse layouts! By finely adjusting the line spacing and letter spacing, the watermark layout becomes well-proportioned and uniform. Maintain visual aesthetics while covering the entire page, making the watermark a part of the document layout art. Why Choose PDF Watermark Assistant? Focused on PDF watermarks, pure functionality without bloat What you see is what you get, real-time preview of parameter adjustments Attention to detail, the top choice for layout enthusiasts and perfectionists Download PDF Watermark Assistant now, and dress your PDF documents in a tailor-made professional “protective suit”! — Privacy Policy please visit: https://docs.qq.com/doc/DREt1SXJkbG9JYUFT * **Terms of use (EULA): * https://docs.qq.com/doc/DREdKR2ZwYUJaa1hr * **Terms of apple please visit: * https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Avi Pdf Pro4 screens
PDF Watermark Assistant4 screens

Verdict

The call

The clearest difference is price: Avi Pdf Pro at Free against PDF Watermark Assistant's $0.99. Avi Pdf Pro also leads on update cadence (every 2 months vs every 5 months). On ads, in-app purchases, device support and iOS requirement 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

Avi Pdf Pro is free to download; PDF Watermark Assistant costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Avi Pdf Pro ships an update every 2 months, PDF Watermark Assistant every 5 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Avi Pdf Pro versus PDF Watermark Assistant: the parameters behind the verdict, then further details
ParameterAvi Pdf ProPDF Watermark Assistant
PriceFree — better$0.99
Rating4.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.6
Further details — not scored
Size40 MB5 MB
Age rating4+4+
DeveloperNavjot Singh乐祥 胡

In-app purchases

None

Avi Pdf Pro

No in-app purchases

None

PDF Watermark Assistant

No in-app purchases

Questions

Is Avi Pdf Pro free?
Avi Pdf Pro is free to download, with no in-app purchases.
Is PDF Watermark Assistant free?
PDF Watermark Assistant costs $0.99, with no in-app purchases.
Do Avi Pdf Pro or PDF Watermark Assistant have ads?
Neither Avi Pdf Pro nor PDF Watermark Assistant shows ads.
Which is updated more often, Avi Pdf Pro or PDF Watermark Assistant?
Avi Pdf Pro ships an update every 2 months, and PDF Watermark Assistant every 5 months. Most recently, Avi Pdf Pro was updated on November 3, 2026 and PDF Watermark Assistant on October 30, 2026.

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