# 北京二十中学 vs SoundLab

The clearest difference is in-app purchases: 北京二十中学 at none against SoundLab's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SoundLab sells 2 in-app purchases, starting at $2.99 per month. 北京二十中学 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 北京二十中学 | SoundLab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 65 MB | 20 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京中科联诚软件股份有限公司](https://appshunter.io/developer/1197943931) | [Shanghai Zhaoshi Technology Co., Ltd](https://appshunter.io/developer/1803512439) |

## What reviewers say

### 北京二十中学

[App page](https://appshunter.io/ios/app/id1243850154)

**In-app purchases:** none


### SoundLab

[App page](https://appshunter.io/ios/app/soundlab-audio-data-analyzer/id6751793537)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Annual Membership | $19.99 | per year |


## Frequently asked questions

### Is 北京二十中学 free?

北京二十中学 is free to download, with no in-app purchases.

### Is SoundLab free?

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

### Do 北京二十中学 or SoundLab have ads?

Neither 北京二十中学 nor SoundLab shows ads.

### Which is updated more often, 北京二十中学 or SoundLab?

北京二十中学 ships an update fortnightly, and SoundLab fortnightly. Most recently, 北京二十中学 was updated on October 16, 2026 and SoundLab on October 24, 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.*