# 音频提取器 vs 实时海拔测量仪

The clearest difference is in-app purchases: 实时海拔测量仪 at none against 音频提取器's 4. 音频提取器's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 音频提取器 sells 4 in-app purchases, starting at $2.99 per 7 days. 实时海拔测量仪 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly daily. Both last shipped on November 5, 2026.

## The numbers

| Metric | 音频提取器 | 实时海拔测量仪 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Daily | Daily |
| Size | 154 MB | 22 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [同洲 王](https://appshunter.io/developer/1700737159) | [YYDS Limited](https://appshunter.io/developer/1582146683) |

## What reviewers say

### 音频提取器

[App page](https://appshunter.io/ios/app/and/id6758710811)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员活动 | $2.99 | per 7 days |
| 周会员折扣 | $4.99 | per 7 days |
| 周会员订阅 | $6.99 | per 7 days |
| 订阅年会员 | $22.99 | per year |


### 实时海拔测量仪

[App page](https://appshunter.io/ios/app/id6774508786)

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

**In-app purchases:** none


## Frequently asked questions

### Is 音频提取器 free?

音频提取器 is free to download, with in-app purchases available.

### Is 实时海拔测量仪 free?

实时海拔测量仪 is free to download, with no in-app purchases.

### Do 音频提取器 or 实时海拔测量仪 have ads?

实时海拔测量仪 shows ads; 音频提取器 does not.

### Which is updated more often, 音频提取器 or 实时海拔测量仪?

音频提取器 ships an update daily, and 实时海拔测量仪 daily. Most recently, 音频提取器 was updated on November 5, 2026 and 实时海拔测量仪 on November 5, 2026.

---

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