# PowerMaster Cloud vs BioStar Air

The clearest difference is rating: BioStar Air at 5.0 against PowerMaster Cloud's 1.0. PowerMaster Cloud's advantage is iOS requirement (9.0 vs 16.4). On price, ratings volume, update cadence and ads there is nothing between them.

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

BioStar Air holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

PowerMaster Cloud ships an update every 3 months, BioStar Air every 6 weeks. The most recent releases landed on October 8, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | PowerMaster Cloud | BioStar Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/powermaster-cloud/id1499054894/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/biostar-air/id6745057397/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 77 MB | 133 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Neuropower (M) Sdn Bhd](https://appshunter.io/developer/1499054892) | [Suprema Inc.](https://appshunter.io/developer/1027628414) |

## What reviewers say

### PowerMaster Cloud

[App page](https://appshunter.io/ios/app/powermaster-cloud/id1499054894)

Monitor your Uninterruptible Power Supply (UPS) status remotely and receive instant event notifications. The app provides a comprehensive overview of power, battery, and load conditions, supporting multiple UPS devices.

**Highlights:** Real-time UPS status overview, Event and status logging, Multiple UPS monitoring, Instant event notifications, Multi-language support

**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 PowerMaster Cloud free?

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

### Is BioStar Air free?

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

### Which has better reviews, PowerMaster Cloud or BioStar Air?

BioStar Air is rated higher. PowerMaster Cloud averages 1.0 out of 5 from 1 ratings, while BioStar Air averages 5.0 from 1 ratings.

### Do PowerMaster Cloud or BioStar Air have ads?

Neither PowerMaster Cloud nor BioStar Air shows ads.

### Which is updated more often, PowerMaster Cloud or BioStar Air?

PowerMaster Cloud ships an update every 3 months, and BioStar Air every 6 weeks. Most recently, PowerMaster Cloud was updated on October 8, 2026 and BioStar Air on October 19, 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.*