Comparison

Secure Watermark vs Tutu Watermark

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

Head to head
About

Secure Watermark

Easily protect your sensitive documents and digital creations from unauthorized use. Add custom text, image, or handwritten signature watermarks to photos, IDs, and artwork. Offers advanced customization for text and image placement, with ID mode for seamless document protection.

Highlights
  • Rich text watermarks with full customization
  • Image watermarks with adjustable transparency
  • Handwritten signature watermarks
  • ID mode for secure document protection
  • Export as image or PDF at 300 DPI
  • Watermark management list
Read full description

Secure Watermark adds a lasting, visible watermark to ID documents and photos — entirely on your device. No network required, no account, nothing uploaded. Protection of privacy is the whole point: your images never leave your iPhone or iPad. THREE MODES ID Document Watermark Photograph both sides of a document and let the app handle the framing. Secure Watermark finds the card edge on device, corrects the perspective and crops it automatically, then lays the front and back out on a single A4 sheet ready for a full-page watermark. If the edges cannot be found, the shot is cropped to the on-screen guide instead. You can import existing pictures instead of shooting. Works with ID Card, Driver License, Social Security Card and Bank Card, and the finished sheet exports as an image or a PDF. Full-Screen Watermark Import several photos at once and cover each one with a watermark that spans the whole frame. Built for the moment a picture has to leave your hands: reduce exposure risk before it travels. Custom Watermark Pick one watermark from the library and place it where you want it, on a single photo or a whole batch. THREE WATERMARK TYPES • Text watermark — build a clean, professional mark with rich text. • Image watermark — use any image of your own as the watermark. • Signature watermark — write a handwritten signature and use it as the watermark. WATERMARK LIBRARY Every watermark keeps its own look, so choosing one applies it to every photo you export, and ready-made templates give you a starting point. Font, color, opacity, rotation, spacing, margins and alignment are adjustable, and you can save, rename or delete your own watermarks at any time. PRIVACY Everything runs on device. Secure Watermark makes no network requests and needs no sign-in, and your pictures are never uploaded anywhere. The photos you capture for ID document mode stay inside the app's own sandbox while you work; only the watermarked result you export is saved to your photo library. PRO Pro removes the export limits: • Export full screen watermark images • Export certificate images and PDFs • Export several images at once • View the preview full screen Custom Watermark mode exports without Pro, one image at a time. The other two modes need Pro to export. Built for iPhone and iPad, with an interface in 22 languages. Your documents, your device.

About

Tutu Watermark

Features
Read full description

The functions of adding watermarks to images are as follows: -Custom watermark text -Definition of watermark color -Custom Transparency of Watermark Text -Custom watermark text angle -Custom watermark spacing -Custom watermark line height

Screenshots

Secure Watermark4 screens
Tutu Watermark4 screens

Verdict

The call

The clearest difference is in-app purchases: Secure Watermark at none against Tutu Watermark's 1. Tutu Watermark's advantage is update cadence (every 3 weeks vs every 14 months) and iOS requirement (12.0 vs 17.0). On price, ads 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. Tutu Watermark sells 1 one-off in-app purchase. Secure Watermark asks for nothing beyond the download.

UpkeepUpdate frequency

Secure Watermark ships an update every 14 months, Tutu Watermark every 3 weeks. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 6 level
Secure Watermark versus Tutu Watermark: the parameters behind the verdict, then further details
ParameterSecure WatermarkTutu Watermark
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 14 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.012.0 — better
Further details — not scored
Size6 MB30 MB
Age rating4+4+
Developer泽海 黄单 安

In-app purchases

None

Secure Watermark

No in-app purchases

1 purchases

Tutu Watermark

One-time1
  • Permanent card$3.99

Questions

Is Secure Watermark free?
Secure Watermark is free to download, with no in-app purchases.
Is Tutu Watermark free?
Tutu Watermark is free to download, with in-app purchases available.
Do Secure Watermark or Tutu Watermark have ads?
Neither Secure Watermark nor Tutu Watermark shows ads.
Which is updated more often, Secure Watermark or Tutu Watermark?
Secure Watermark ships an update every 14 months, and Tutu Watermark every 3 weeks. Most recently, Secure Watermark was updated on October 18, 2026 and Tutu Watermark on October 14, 2026.

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