Contacts Manager vs 证件水印
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Contacts Manager
Organize your address book with advanced AI. Easily back up, merge duplicates, and manage contacts. Send group messages and delete entries in bulk for a cleaner, more efficient contact list.
- AI-powered contact management
- One-click vCard backup and sync
- Intelligent duplicate contact merging
- Detects expired and frequently used numbers
- Group SMS sending
- Batch contact deletion
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* Use international cutting-edge artificial intelligence algorithms * ======Smart management address book====== [Backup Management]: Export vCard from the phone address book with one click, sync back to the phone at any time, don’t worry about changing phones! [Quick arrangement]: It is more convenient to change the machine. Intelligently merge duplicate contacts, save worry and effort [Smart Detection]: Automatically detect expired numbers and frequently used numbers, making it more convenient to make calls [Group SMS]: Send holiday blessing SMS in groups, the app does not charge fees [Batch delete]: Delete contacts in batch with one key
证件水印
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.
- Add text watermarks
- Protect privacy information
- A4 copy print mode
- Export PDF or image
- Batch watermark up to 50 photos
- No network requests
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证件水印 App 是一款为证件、照片添加文字水印的小工具，保障您的隐私信息不被盗用。 - 支持制作 A4 复印打印模式，导出 PDF 或图片格式 - 支持最多 50 张照片批量添加水印 证件水印 App 不会记录任何信息，无网络请求，不会发送任何数据请求，请放心使用。 如果遇到问题，请在设置的反馈中联系我们。
Screenshots
Verdict
The clearest difference is rating: 证件水印 at 5.0 against Contacts Manager's 4.5. Contacts Manager's advantage is update cadence (every 3 months vs every 14 months) and ratings volume (92 vs 12). On review sentiment, 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
Contacts Manager costs $0.99 and 证件水印 $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 4.5. That said, the two scores are not equally well evidenced: Contacts Manager has 92 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 84% of Contacts Manager's written reviews are positive against 92% of 证件水印's.
Contacts Manager ships an update every 3 months, 证件水印 every 14 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Contacts Manager | 证件水印 |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 4.5 (92 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 84.2% of reviews | 92.0% of reviews — better |
| Number of ratings | 92 — better | 12 |
| Update frequency | Every 3 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 11 MB | 2 MB |
| Age rating | 4+ | 12+ |
| Developer | Chuansheng Jia | 阳理 江 |
Customer experience
Contacts Manager
证件水印
In-app purchases
Contacts Manager
No in-app purchases
证件水印
No in-app purchases
