Comparison

Subverter 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

Subverter

Easily convert subtitle files between various formats like SRT, VTT, and ASS. This app prioritizes user privacy with local, offline processing and offers a clean, ad-free experience for video editors and content creators.

Highlights
  • Wide format support (SRT, VTT, SSA/ASS, SUB, SBV)
  • Offline conversion
  • Ad-free experience
  • User-friendly interface
  • Local processing for privacy
Features
Read full description

Transform your subtitles quickly and effortlessly with Subverter, the go-to app for all your subtitle conversion needs. Whether you’re a video editor, content creator, or hobbyist, Subverter makes subtitle conversion a breeze. Key features: - Wide format support: seamlessly convert between SRT, VTT, SSA/ASS, SUB, and SBV formats, ensuring compatibility with all platforms. - Offline conversion: your privacy is our priority—everything happens locally on your device. - No ads, no distractions: focus on your work with a clean, ad-free experience. - User-friendly interface: import, choose your formats, and convert in just a few taps. Subverter combines power and simplicity to help you save time and stay productive. Start converting your subtitles today and elevate your video projects!

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

Subverter2 screens
PDF Watermark Assistant4 screens

Verdict

The call

The clearest difference is price: PDF Watermark Assistant at $0.99 against Subverter's $1.99. On update cadence, 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

Subverter costs $1.99 and PDF Watermark Assistant $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Subverter ships an update every 3 months, PDF Watermark Assistant every 5 months. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 8 level
Subverter versus PDF Watermark Assistant: the parameters behind the verdict, then further details
ParameterSubverterPDF Watermark Assistant
Price$1.99$0.99 — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better16.6
Further details — not scored
Size1 MB5 MB
Age rating4+4+
DeveloperMarco Tini乐祥 胡

In-app purchases

None

Subverter

No in-app purchases

None

PDF Watermark Assistant

No in-app purchases

Questions

Is Subverter free?
Subverter costs $1.99, with no in-app purchases.
Is PDF Watermark Assistant free?
PDF Watermark Assistant costs $0.99, with no in-app purchases.
Do Subverter or PDF Watermark Assistant have ads?
Neither Subverter nor PDF Watermark Assistant shows ads.
Which is updated more often, Subverter or PDF Watermark Assistant?
Subverter ships an update every 3 months, and PDF Watermark Assistant every 5 months. Most recently, Subverter was updated on October 12, 2026 and PDF Watermark Assistant on October 28, 2026.

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