# Melodothogy vs 虚空济

The clearest difference is in-app purchases: Melodothogy at none against 虚空济's 3. 虚空济's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 虚空济 sells 3 one-off in-app purchases. Melodothogy asks for nothing beyond the download.

Melodothogy ships an update every 3 weeks, 虚空济 weekly. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Melodothogy | 虚空济 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id1505471798/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 81.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 28 MB | 8 MB |
| Requires iOS | **15.1** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Meng Two Inc.](https://appshunter.io/developer/1474254181) | [山东元智文化传播有限公司](https://appshunter.io/developer/1505471797) |

## What reviewers say

### Melodothogy

[App page](https://appshunter.io/ios/app/melodothogy/id1474254182)

**Features:** macOS Compatibility

**In-app purchases:** none


### 虚空济

[App page](https://appshunter.io/ios/app/id1505471798)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6个月会员 | $49.99 | one-time |
| 12个月会员 | $79.99 | one-time |
| 36个月会员 | $229.99 | one-time |


## Frequently asked questions

### Is Melodothogy free?

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

### Is 虚空济 free?

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

### Do Melodothogy or 虚空济 have ads?

Neither Melodothogy nor 虚空济 shows ads.

### Which is updated more often, Melodothogy or 虚空济?

Melodothogy ships an update every 3 weeks, and 虚空济 weekly. Most recently, Melodothogy was updated on October 20, 2026 and 虚空济 on October 9, 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.*