# S1 | S2・Connect & Control vs BK400

The clearest difference is in-app purchases: BK400 at none against S1 | S2・Connect & Control's 10. BK400 also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. S1 | S2・Connect & Control sells 10 in-app purchases, starting at $5.99 per 7 days. BK400 asks for nothing beyond the download.

## The numbers

| Metric | S1 | S2・Connect & Control | BK400 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 50 MB | 21 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MAN COMERCE DOO](https://appshunter.io/developer/1880037620) | [祖策 谢](https://appshunter.io/developer/983519195) |

## What reviewers say

### S1 | S2・Connect & Control

[App page](https://appshunter.io/ios/app/s1-s2connect-and-control/id6759653843)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| S1 \| S2・Connect & Control | $5.99 | per 7 days |
| S1 \| S2・Connect & Control | $5.99 | per 7 days |
| S1 \| S2・Audio & Control | $5.99 | per 7 days |
| S1 \| S2・Sound & Control | $5.99 | per 7 days |
| S1 \| S2・Music & Control | $7.99 | per 7 days |
| S1 \| S2・Audio Control & Connect | $9.99 | per 7 days |
| S1 \| S2・Sound Control & Connect | $19.99 | per month |
| S1 \| S2・Music Control & Connect | $29.99 | per month |
| S1 \| S2・Audio Boost & Control | $39.99 | per year |
| S1 \| S2・Music Boost & Control | $49.99 | per year |


### BK400

[App page](https://appshunter.io/ios/app/bk400/id6760681499)

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

**In-app purchases:** none


## Frequently asked questions

### Is S1 | S2・Connect & Control free?

S1 | S2・Connect & Control is free to download, with in-app purchases available.

### Is BK400 free?

BK400 is free to download, with no in-app purchases.

### Do S1 | S2・Connect & Control or BK400 have ads?

Neither S1 | S2・Connect & Control nor BK400 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.*