# 公式大师Pro vs C.md

The clearest difference is update cadence: C.md at every 4 days against 公式大师Pro's every 3 weeks. 公式大师Pro's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 公式大师Pro sells 4 one-off in-app purchases and C.md sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

公式大师Pro ships an update every 3 weeks, C.md every 4 days. The most recent releases landed on September 21, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 公式大师Pro | C.md |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pro-a/id1537943079/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 173 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [治波 王](https://appshunter.io/developer/1744485157) | [建东 高](https://appshunter.io/developer/1597492102) |

## What reviewers say

### 公式大师Pro

[App page](https://appshunter.io/ios/app/pro-a/id1537943079)

This app helps stock traders find profitable stocks using AI-powered selection formulas and technical analysis tools. It offers a community of traders, a formula store, and tutorials for beginners. It supports custom formula creation and real-time market data.

**Highlights:** AI-powered stock selection, Community of stock traders, Formula store with AI formulas, Custom formula editor with syntax highlighting, Real-time market data, Technical indicators (MACD, KDJ, etc.), Formula tutorials

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 18金币 | $2.99 | one-time |
| 100金币 | $14.99 | one-time |
| 专家VIP | $22.99 | one-time |
| 300金币 | $49.99 | one-time |


### C.md

[App page](https://appshunter.io/ios/app/cmd-markdown-reader/id6810085356)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C.md Pro | $9.99 | one-time |


## Frequently asked questions

### Is 公式大师Pro free?

公式大师Pro is free to download, with in-app purchases available.

### Is C.md free?

C.md is free to download, with in-app purchases available.

### Do 公式大师Pro or C.md have ads?

Neither 公式大师Pro nor C.md shows ads.

### Which is updated more often, 公式大师Pro or C.md?

公式大师Pro ships an update every 3 weeks, and C.md every 4 days. Most recently, 公式大师Pro was updated on September 21, 2026 and C.md on October 8, 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.*