# Oxygen go vs BioStar Air

The clearest difference is update cadence: BioStar Air at every 6 weeks against Oxygen go's every 4 months. Oxygen go's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, 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.

Oxygen go ships an update every 4 months, BioStar Air every 6 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Oxygen go | 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 4 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 54 MB | 133 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rubik Smart Solutions](https://appshunter.io/developer/1483981076) | [SUPREMA](https://appshunter.io/developer/1027628414) |

## What reviewers say

### Oxygen go

[App page](https://appshunter.io/ios/app/oxygen-go/id1553909884)

**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 Oxygen go free?

Oxygen go 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 Oxygen go or BioStar Air have ads?

Neither Oxygen go nor BioStar Air shows ads.

### Which is updated more often, Oxygen go or BioStar Air?

Oxygen go ships an update every 4 months, and BioStar Air every 6 weeks. Most recently, Oxygen go was updated on November 7, 2026 and BioStar Air on October 30, 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.*