Comparison

World Time Check vs Secure Watermark

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

Head to head
About

World Time Check

Easily view and compare current times across multiple global cities simultaneously. This utility helps you coordinate international meetings or plan travel by showing time differences with intuitive scrolling and real-time synchronization.

Highlights
  • Multiple cities at once
  • Real-time sync
  • Check future times
  • Easy city search
  • Custom date & time
  • Daylight saving support
Features
Read full description

View times from cities around the world in a single list and check time differences with intuitive scrolling. Perfect for coordinating international meetings or planning trips abroad. See the flow of time across multiple cities simultaneously. 【Key Features】 ◆ Multiple Cities at Once No limit on cities you can add. View them all with horizontal scrolling. ◆ Real-Time Sync Auto-scroll to current time when real-time mode is enabled. ◆ Check Future Times Scroll vertically to see upcoming times for each region. ◆ Easy City Search Search by city name or quickly select from your history. ◆ Custom Date & Time Set a specific date and time to see corresponding times in all regions. ◆ Daylight Saving Support DST periods are visually highlighted in pink.

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.

Screenshots

World Time Check2 screens
Secure Watermark4 screens

Verdict

The call

The clearest difference is price: Secure Watermark at Free against World Time Check's $0.99. World Time Check's advantage is update cadence (every 5 months vs every 14 months) and iOS requirement (15.5 vs 17.0). On rating, ratings volume, ads and in-app purchases 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

Secure Watermark is free to download; World Time Check costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 1.0 for World Time Check against 1.0 for Secure Watermark. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

World Time Check ships an update every 5 months, Secure Watermark every 14 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
World Time Check versus Secure Watermark: the parameters behind the verdict, then further details
ParameterWorld Time CheckSecure Watermark
Price$0.99Free — better
Rating1.0 (1 ratings)1.0 (1 ratings)
Positive reviews14.3% of reviews—
Number of ratings11
Update frequencyEvery 5 months — betterEvery 14 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better17.0
Further details — not scored
Size1 MB6 MB
Age rating4+4+
DeveloperSHUJI FUKUNAGA泽海 黄

Customer experience

World Time Check

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews7 reviews
Positive14.3%
Neutral28.6%
Negative57.1%

Secure Watermark

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

World Time Check

No in-app purchases

None

Secure Watermark

No in-app purchases

Questions

Is World Time Check free?
World Time Check costs $0.99, with no in-app purchases.
Is Secure Watermark free?
Secure Watermark is free to download, with no in-app purchases.
Which has better reviews, World Time Check or Secure Watermark?
World Time Check and Secure Watermark are both rated 1.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do World Time Check or Secure Watermark have ads?
Neither World Time Check nor Secure Watermark shows ads.
Which is updated more often, World Time Check or Secure Watermark?
World Time Check ships an update every 5 months, and Secure Watermark every 14 months. Most recently, World Time Check was updated on November 1, 2026 and Secure Watermark on November 4, 2026.

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