Comparison

PDF Watermark Assistant vs Maskduck

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

Head to head
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/

About

Maskduck

Features
Read full description

Maskduck is the fastest way to hide sensitive information in your screenshots and photos before you share them. Smart detection finds private info for you — then a single tap covers it up. Everything happens on your device. Your photos never leave your phone. WHAT IT MASKS • Phone numbers • Email addresses • Credit and debit card numbers • ID and document numbers • Bank account numbers • IP addresses • License plates • Long numeric strings that look private HOW IT WORKS 1. Pick a photo from your library. 2. Maskduck scans the text and highlights anything sensitive. 3. Tap to hide it — or draw your own mask with the brush or rectangle tool. 4. Save or share. That's it. FOUR MASK STYLES • Solid — clean black bars • Pixelate — classic mosaic look • Blur — soft gaussian blur • Hide — cover with a matching background BUILT FOR PRIVACY • 100% on-device processing — nothing is uploaded • No account, no sign-in, no ads, no tracking • Works offline • Only asks for the photo permissions it actually needs WHO IT'S FOR • Anyone sharing receipts, tickets, or order confirmations • Sellers posting product photos with personal info in the background • Developers and designers sharing screenshots with tokens or emails • Journalists and researchers redacting documents • Anyone who values privacy before hitting "send" Stop cropping awkwardly or editing in five different apps. Maskduck handles it in seconds.

Screenshots

PDF Watermark Assistant4 screens
Maskduck4 screens

Verdict

The call

The clearest difference is price: Maskduck at Free against PDF Watermark Assistant's $0.99. Maskduck also leads on update cadence (weekly vs every 5 months). PDF Watermark Assistant's advantage is in-app purchases (none vs 1). On ads, 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

Maskduck is free to download; PDF Watermark Assistant costs $0.99 up front. Maskduck sells 1 one-off in-app purchase. PDF Watermark Assistant asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Watermark Assistant ships an update every 5 months, Maskduck weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
PDF Watermark Assistant versus Maskduck: the parameters behind the verdict, then further details
ParameterPDF Watermark AssistantMaskduck
Price$0.99Free — better
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad — betteriPhone
Requires iOS16.616.0 — better
Further details — not scored
Size5 MB1 MB
Age rating4+4+
Developer乐祥 胡雨燕 杨

In-app purchases

None

PDF Watermark Assistant

No in-app purchases

1 purchases

Maskduck

One-time1
  • Remove Watermark$0.99

Questions

Is PDF Watermark Assistant free?
PDF Watermark Assistant costs $0.99, with no in-app purchases.
Is Maskduck free?
Maskduck is free to download, with in-app purchases available.
Do PDF Watermark Assistant or Maskduck have ads?
Neither PDF Watermark Assistant nor Maskduck shows ads.
Which is updated more often, PDF Watermark Assistant or Maskduck?
PDF Watermark Assistant ships an update every 5 months, and Maskduck weekly. Most recently, PDF Watermark Assistant was updated on October 30, 2026 and Maskduck on October 31, 2026.

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