# 五運六氣 Pro vs ReadTrace Pro

The clearest difference is price: ReadTrace Pro at Free against 五運六氣 Pro's $1.99. ReadTrace Pro also leads on update cadence (every 3 days vs every 2 months) and review sentiment (100% vs 71%). 五運六氣 Pro's advantage is iOS requirement (15.1 vs 17.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

ReadTrace Pro is free to download; 五運六氣 Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for 五運六氣 Pro against 5.0 for ReadTrace Pro. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 71% of 五運六氣 Pro's written reviews are positive against 100% of ReadTrace Pro's.

五運六氣 Pro ships an update every 2 months, ReadTrace Pro every 3 days. The most recent releases landed on September 25, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | 五運六氣 Pro | ReadTrace Pro |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/pro/id1454950835/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/readtrace-pro/id6760514671/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Paid | **Free** |
| Size | 88 MB | 2 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cheng-Ta Hsieh](https://appshunter.io/developer/1111361894) | [熵析云枢网络科技](https://appshunter.io/developer/1873311794) |

## What reviewers say

### 五運六氣 Pro

[App page](https://appshunter.io/ios/app/pro/id1454950835)

This app analyzes climate changes, biological processes, and disease outbreaks based on traditional Chinese theories like the Five Elements and Six Qi. The professional version also offers constitution and destiny analysis.

**Highlights:** Five Elements and Six Qi theory, Tian Gan Di Zhi symbols, Climate change inference, Biological process analysis, Disease outbreak prediction, Constitution analysis, Destiny analysis

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

**In-app purchases:** none


### ReadTrace Pro

[App page](https://appshunter.io/ios/app/readtrace-pro/id6760514671)

Save articles from the web for offline reading with a clean, serif-first interface. Organize saved content with custom collections and find anything with intelligent on-device search. Enjoy a private, ad-free reading experience designed for focused consumption.

**Highlights:** Save articles from web, Offline reading, Custom collections, Semantic search, Auto-tagging, iCloud backup, Ad-free experience

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

**In-app purchases:** none


## Frequently asked questions

### Is 五運六氣 Pro free?

五運六氣 Pro costs $1.99, with no in-app purchases.

### Is ReadTrace Pro free?

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

### Which has better reviews, 五運六氣 Pro or ReadTrace Pro?

五運六氣 Pro and ReadTrace Pro are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 五運六氣 Pro or ReadTrace Pro have ads?

Neither 五運六氣 Pro nor ReadTrace Pro shows ads.

### Which is updated more often, 五運六氣 Pro or ReadTrace Pro?

五運六氣 Pro ships an update every 2 months, and ReadTrace Pro every 3 days. Most recently, 五運六氣 Pro was updated on September 25, 2026 and ReadTrace Pro on September 7, 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.*