# 促銷王國 vs 星嶼 StarryEcho

The clearest difference is in-app purchases: 促銷王國 at none against 星嶼 StarryEcho's 2. 促銷王國 also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, update cadence and ads there is nothing between them.

Both are free to download. 星嶼 StarryEcho sells 2 in-app purchases, starting at $1.99 per month. 促銷王國 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 促銷王國 | 星嶼 StarryEcho |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id6759785183/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 51 MB | 16 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [YuanJin Li](https://appshunter.io/developer/1880625295) | [PEI HSUAN LEE](https://appshunter.io/developer/1881981311) |

## What reviewers say

### 促銷王國

[App page](https://appshunter.io/ios/app/id6759785183)

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

**In-app purchases:** none


### 星嶼 StarryEcho

[App page](https://appshunter.io/ios/app/starryecho/id6759965730)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Star Isle Guardian | $1.99 | per month |
| Star Isle Creator | $3.99 | per month |


## Frequently asked questions

### Is 促銷王國 free?

促銷王國 is free to download, with no in-app purchases.

### Is 星嶼 StarryEcho free?

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

### Do 促銷王國 or 星嶼 StarryEcho have ads?

Neither 促銷王國 nor 星嶼 StarryEcho shows ads.

### Which is updated more often, 促銷王國 or 星嶼 StarryEcho?

促銷王國 ships an update weekly, and 星嶼 StarryEcho weekly. Most recently, 促銷王國 was updated on October 7, 2026 and 星嶼 StarryEcho on October 5, 2026.

---

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