# 印章 vs 音频转换器

印章 and 音频转换器 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 印章 sells 2 in-app purchases, starting at $3.99 per 7 days and 音频转换器 sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

印章 ships an update every 10 days, 音频转换器 fortnightly. Both last shipped on October 7, 2026.

## The numbers

| Metric | 印章 | 音频转换器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Fortnightly |
| Size | 103 MB | 29 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [雅静 曾](https://appshunter.io/developer/1896577802) | [亮亮 黄](https://appshunter.io/developer/1887141694) |

## What reviewers say

### 印章

[App page](https://appshunter.io/ios/app/pdf/id6761871382)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $3.99 | per 7 days |
| 永久会员 | $24.99 | one-time |


### 音频转换器

[App page](https://appshunter.io/ios/app/mp3/id6762239265)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Converter Weekly Pro | $4.99 | per 7 days |
| Audio Converter Forever Pro | $14.99 | one-time |


## Frequently asked questions

### Is 印章 free?

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

### Is 音频转换器 free?

音频转换器 is free to download, with in-app purchases available.

### Do 印章 or 音频转换器 have ads?

Neither 印章 nor 音频转换器 shows ads.

### Which is updated more often, 印章 or 音频转换器?

印章 ships an update every 10 days, and 音频转换器 fortnightly. Most recently, 印章 was updated on October 7, 2026 and 音频转换器 on October 7, 2026.

---

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