# 139邮箱 vs 水印大师

The clearest difference is review sentiment: 139邮箱 at 86% against 水印大师's 44%. 139邮箱 also leads on in-app purchases (none vs 10) and ratings volume (106 vs 13). 水印大师's advantage is rating (5.0 vs 4.6) and update cadence (fortnightly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 水印大师 sells 10 in-app purchases, starting at $3.99 per 7 days. 139邮箱 asks for nothing beyond the download.

水印大师 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: 139邮箱 has 106 ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 86% of 139邮箱's written reviews are positive against 44% of 水印大师's, so the app with the better star average is not the one people write more warmly about.

139邮箱 ships an update monthly, 水印大师 fortnightly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 139邮箱 | 水印大师 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (106 ratings)](https://appshunter.io/ios/app/139/id474433226/reviews) | **[5.0 (13 ratings)](https://appshunter.io/ios/app/id6670387586/reviews)** |
| Number of ratings | **106** | 13 |
| Positive reviews | **86.1% of reviews** | 43.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 189 MB | 53 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [China Mobile Internet Company Limited](https://appshunter.io/developer/1612019289) | [Tanbei Information](https://appshunter.io/developer/1766044728) |

## What reviewers say

### 139邮箱

[App page](https://appshunter.io/ios/app/139/id474433226)

This app offers a comprehensive email and cloud storage solution, allowing users to send and receive emails, back up phone data, and utilize AI-powered tools for enhanced productivity. It provides secure cloud storage, voice-to-text notes, and convenient bill checking.

**Highlights:** Email and cloud storage integration, AI-powered writing and summarization, Secure cloud backup for files and photos, Voice-to-text note-taking, Multi-account email management, One-click passwordless login, Bill and invoice management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 水印大师

[App page](https://appshunter.io/ios/app/id6670387586)

Easily extract videos and images from various links. Add custom watermarks, stickers, and text to your photos. Access a vast library of high-definition video materials for your creative projects.

**Highlights:** Extract videos from links, Batch save images from links, Add custom watermarks to images, Extensive video material library, AI image repair, Format conversion

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员-3天免费试用 | $3.99 | per 7 days |
| 包周使用 | $3.99 | per 7 days |
| 水印大师VIP-包周会员 | $7.99 | per 7 days |
| 水印大师VIP-包月会员 | $14.99 | per month |
| 包年会员 | $39.99 | per year |
| 80积分 | $3.99 | one-time |
| 280积分 | $9.99 | one-time |
| 580积分 | $19.99 | one-time |
| 终生会员 | $39.99 | one-time |
| 1400积分 | $39.99 | one-time |


## Frequently asked questions

### Is 139邮箱 free?

139邮箱 is free to download, with no in-app purchases.

### Is 水印大师 free?

水印大师 is free to download, with in-app purchases available.

### Which has better reviews, 139邮箱 or 水印大师?

水印大师 is rated higher. 139邮箱 averages 4.6 out of 5 from 106 ratings, while 水印大师 averages 5.0 from 13 ratings.

### Do 139邮箱 or 水印大师 have ads?

Neither 139邮箱 nor 水印大师 shows ads.

### Which is updated more often, 139邮箱 or 水印大师?

139邮箱 ships an update monthly, and 水印大师 fortnightly. Most recently, 139邮箱 was updated on November 1, 2026 and 水印大师 on November 4, 2026.

---

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