# 生物记 vs Audio Amp

The clearest difference is price: 生物记 at Free against Audio Amp's $149.99. Audio Amp's advantage is iOS requirement (11.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

生物记 is free to download; Audio Amp costs $149.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 生物记 | Audio Amp |
| --- | --- | --- |
| Price | **Free** | $149.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 94 MB | 99 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [北京微普科创科技有限公司](https://appshunter.io/developer/1073525273) | [Vertical Miles Pte. Ltd.](https://appshunter.io/developer/1577357084) |

## What reviewers say

### 生物记

[App page](https://appshunter.io/ios/app/id1468297340)

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

**In-app purchases:** none


### Audio Amp

[App page](https://appshunter.io/ios/app/audio-amp/id6447229079)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 生物记 free?

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

### Is Audio Amp free?

Audio Amp costs $149.99, with no in-app purchases.

### Do 生物记 or Audio Amp have ads?

Neither 生物记 nor Audio Amp shows ads.

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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.*