# 股市Coding vs Undula

The clearest difference is ads: Undula at none against 股市Coding's shown. 股市Coding's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. 股市Coding sells 2 in-app purchases, starting at $9.99 per month and Undula sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

股市Coding ships an update weekly, Undula every 8 days. The most recent releases landed on September 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 股市Coding | Undula |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (4 ratings)](https://appshunter.io/ios/app/undula-insider-trading/id6744305133/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | — | Freemium |
| Size | 152 MB | 36 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tseng KuoYu](https://appshunter.io/developer/1800503555) | [Cheuk Kwan Lam](https://appshunter.io/developer/1806991098) |

## What reviewers say

### 股市Coding

[App page](https://appshunter.io/ios/app/coding/id6742903864)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 訂閱一個月 | $9.99 | per month |
| VIP Subscribe for One Month | $11.99 | per month |


### Undula

[App page](https://appshunter.io/ios/app/undula-insider-trading/id6744305133)

Track U.S. company insider transactions in real-time to gain deeper insights into stock movements and market trends. Receive instant alerts for buys, sells, and other transactions, with advanced analysis tools and customizable dashboards.

**Highlights:** Real-time insider alerts, Advanced event studies, Industry and cluster trends, Customizable dashboard views, Detailed company and insider profiles, Powerful transaction filters

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Edition | $14.99 | per month |
| Premium Annual Edition | $143.99 | per year |


## Frequently asked questions

### Is 股市Coding free?

股市Coding is free to download, with in-app purchases available.

### Is Undula free?

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

### Do 股市Coding or Undula have ads?

股市Coding shows ads; Undula does not.

### Which is updated more often, 股市Coding or Undula?

股市Coding ships an update weekly, and Undula every 8 days. Most recently, 股市Coding was updated on September 27, 2026 and Undula on September 17, 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.*