# 龙嘉SCM供应商 vs 证件水印

The clearest difference is price: 龙嘉SCM供应商 at Free against 证件水印's $1.99. 龙嘉SCM供应商 also leads on update cadence (every 4 months vs every 14 months) and iOS requirement (12.0 vs 14.0). On ads, in-app purchases and device support there is nothing between them.

龙嘉SCM供应商 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.

龙嘉SCM供应商 ships an update every 4 months, 证件水印 every 14 months. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 龙嘉SCM供应商 | 证件水印 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[5.0 (12 ratings)](https://appshunter.io/ios/app/id1582930176/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 92.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 14 months |
| Monetization | — | Paid |
| Size | 35 MB | 2 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [文朗 梁](https://appshunter.io/developer/1293631579) | [阳理 江](https://appshunter.io/developer/1645314423) |

## What reviewers say

### 龙嘉SCM供应商

[App page](https://appshunter.io/ios/app/scm/id1459545200)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is 龙嘉SCM供应商 free?

龙嘉SCM供应商 is free to download, with no in-app purchases.

### Is 证件水印 free?

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

### Do 龙嘉SCM供应商 or 证件水印 have ads?

Neither 龙嘉SCM供应商 nor 证件水印 shows ads.

### Which is updated more often, 龙嘉SCM供应商 or 证件水印?

龙嘉SCM供应商 ships an update every 4 months, and 证件水印 every 14 months. Most recently, 龙嘉SCM供应商 was updated on September 17, 2026 and 证件水印 on September 15, 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.*