# 证件水印 vs Secure Watermark

The clearest difference is price: Secure Watermark at Free against 证件水印's $1.99. 证件水印's advantage is rating (5.0 vs 1.0) and ratings volume (12 vs 1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Secure Watermark is free to download; 证件水印 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

证件水印 holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: 证件水印 has 12 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 14 months. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 证件水印 | Secure Watermark |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (12 ratings)](https://appshunter.io/ios/app/id1582930176/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/secure-watermark/id6504274596/reviews) |
| Number of ratings | **12** | 1 |
| Positive reviews | 92.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | Every 14 months |
| Monetization | Paid | **Free** |
| Size | 2 MB | 6 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [阳理 江](https://appshunter.io/developer/1645314423) | [泽海 黄](https://appshunter.io/developer/1069894245) |

## What reviewers say

### 证件水印

[App page](https://appshunter.io/ios/app/id1582930176)

This utility app allows users to add text watermarks to documents and photos, protecting personal information from misuse. It supports batch processing for up to 50 images and can export in PDF or image formats, including an A4 print mode.

**Highlights:** Add text watermarks, Protect privacy information, A4 copy print mode, Export PDF or image, Batch watermark up to 50 photos, No network requests

**Features:** Vision Pro support

**In-app purchases:** none


### Secure Watermark

[App page](https://appshunter.io/ios/app/secure-watermark/id6504274596)

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

**In-app purchases:** none


## Frequently asked questions

### Is 证件水印 free?

证件水印 costs $1.99, with no in-app purchases.

### Is Secure Watermark free?

Secure Watermark is free to download, with no in-app purchases.

### Which has better reviews, 证件水印 or Secure Watermark?

证件水印 is rated higher. 证件水印 averages 5.0 out of 5 from 12 ratings, while Secure Watermark averages 1.0 from 1 ratings.

### Do 证件水印 or Secure Watermark have ads?

Neither 证件水印 nor Secure Watermark shows ads.

### Which is updated more often, 证件水印 or Secure Watermark?

证件水印 ships an update every 14 months, and Secure Watermark every 14 months. Most recently, 证件水印 was updated on October 25, 2026 and Secure Watermark on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*