# S vs BioStar Air

The clearest difference is iOS requirement: S at 13.0 against BioStar Air's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

S ships an update every 5 weeks, BioStar Air every 6 weeks. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | S | BioStar Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/biostar-air/id6745057397/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | — | Free |
| Size | 80 MB | 133 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Scodeno Technology Co., Ltd.](https://appshunter.io/developer/1779436922) | [SUPREMA](https://appshunter.io/developer/1027628414) |

## What reviewers say

### S

[App page](https://appshunter.io/ios/app/s-cloud/id6738114270)

**Features:** macOS Compatibility

**In-app purchases:** none


### BioStar Air

[App page](https://appshunter.io/ios/app/biostar-air/id6745057397)

Transform your smartphone into a secure mobile key for access control systems. Easily unlock doors at your office, gym, or school with a simple tap. Manage multiple credentials and ensure security with instant revocation options.

**Highlights:** Unlock doors with your phone, Works when phone is locked, Store multiple location credentials, Instant credential revocation, More secure than keycards

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

**In-app purchases:** none


## Frequently asked questions

### Is S free?

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

### Is BioStar Air free?

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

### Do S or BioStar Air have ads?

Neither S nor BioStar Air shows ads.

### Which is updated more often, S or BioStar Air?

S ships an update every 5 weeks, and BioStar Air every 6 weeks. Most recently, S was updated on September 19, 2026 and BioStar Air on September 9, 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.*