# 文墨天机®(专业版) vs Vopen

The clearest difference is rating: 文墨天机®(专业版) at 4.9 against Vopen's 3.0. 文墨天机®(专业版) also leads on ads (none vs shown) and review sentiment (85% vs 50%). Vopen's advantage is in-app purchases (none vs 4). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 文墨天机®(专业版) sells 4 one-off in-app purchases. Vopen asks for nothing beyond the download.

文墨天机®(专业版) holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: 文墨天机®(专业版) has 579 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 85% of 文墨天机®(专业版)'s written reviews are positive against 50% of Vopen's.

文墨天机®(专业版) ships an update every 10 days, Vopen weekly. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 文墨天机®(专业版) | Vopen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (579 ratings)](https://appshunter.io/ios/app/id1193514811/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/vopen/id6738730521/reviews) |
| Number of ratings | **579** | 2 |
| Positive reviews | **84.7% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 52 MB | 180 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文辉 王](https://appshunter.io/developer/952653550) | [YAN HUI LUO](https://appshunter.io/developer/1463183369) |

## What reviewers say

### 文墨天机®(专业版)

[App page](https://appshunter.io/ios/app/id1193514811)

This professional astrology tool assists researchers in studying Zi Wei Dou Shu, a traditional Chinese predictive art. It offers accurate astrological charts with a wide time range and supports various schools of thought, making complex calculations accessible.

**Highlights:** Zi Wei Dou Shu charting, High-precision astronomical calendar, Wide time range for charts, Supports multiple astrological schools, User-friendly interface, Continuous updates

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 辅助功能增强包 | $9.99 | one-time |
| 中州派地盘和人盘排盘功能 | $9.99 | one-time |
| 大限流年增强包（童限+小限） | $14.99 | one-time |
| 三合盘流月流日流时排盘功能 | $24.99 | one-time |

**What reviewers like**

- 👍 Professional and practical
- 👍 Convenient and fast
- 👍 Great for learning Ziwei Doushu
- 👍 Accurate and reliable
- 👍 Reasonable pricing for advanced features

**What reviewers complain about**

- 🐛 Crashes after update
- 🐛 Blurry screen and reduced resolution
- 🐛 Display issues on iPhone 17
- 🐛 Quick charting often malfunctions
- 🐛 Four pillars reverse lookup not working

**Reported bugs**

- Crashes after update
- Blurry screen and reduced resolution
- Display issues on iPhone 17
- Quick charting often malfunctions
- Four pillars reverse lookup not working

**Requested features**

- Support for iPhone Air
- Support for Android and Windows platforms
- Add archiving and search functionality
- Consider a subscription model for Pro features
- Add annotation function for major and minor cycles time points


### Vopen

[App page](https://appshunter.io/ios/app/vopen/id6738730521)

This utility app offers real-time video broadcasting, local playback, and cloud storage. It features AI-powered alarms, remote camera control, and voice communication for on-site monitoring.

**Highlights:** Real-time video broadcasting, Local video playback, Video cloud storage, AI intelligent alarm, Remote pan tilt control, Voice intercom

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

**In-app purchases:** none


## Frequently asked questions

### Is 文墨天机®(专业版) free?

文墨天机®(专业版) is free to download, with in-app purchases available.

### Is Vopen free?

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

### Which has better reviews, 文墨天机®(专业版) or Vopen?

文墨天机®(专业版) is rated higher. 文墨天机®(专业版) averages 4.9 out of 5 from 579 ratings, while Vopen averages 3.0 from 2 ratings.

### Do 文墨天机®(专业版) or Vopen have ads?

Vopen shows ads; 文墨天机®(专业版) does not.

### Which is updated more often, 文墨天机®(专业版) or Vopen?

文墨天机®(专业版) ships an update every 10 days, and Vopen weekly. Most recently, 文墨天机®(专业版) was updated on October 19, 2026 and Vopen on October 11, 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.*