# BattAir vs PowerDiag

The clearest difference is device support: BattAir at 3 against PowerDiag's 1. BattAir also leads on iOS requirement (11.0 vs 17.0). 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.

BattAir ships an update monthly, PowerDiag every 2 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | BattAir | PowerDiag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/battair/id1546717583/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 15 MB | 2 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [深圳艾斯特创新科技有限公司](https://appshunter.io/developer/1405370693) | [QIAN WANPENG](https://appshunter.io/developer/1896729435) |

## What reviewers say

### BattAir

[App page](https://appshunter.io/ios/app/battair/id1546717583)

This app displays and manages information for smart batteries. Users can view battery status, adjust settings, and perform firmware upgrades. It's designed for users who need detailed control over their smart battery devices.

**Highlights:** Display smart battery information, Set smart battery parameters, Smart battery firmware upgrade, Real-time battery status monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### PowerDiag

[App page](https://appshunter.io/ios/app/powerdiag/id6770429306)

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

**In-app purchases:** none


## Frequently asked questions

### Is BattAir free?

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

### Is PowerDiag free?

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

### Do BattAir or PowerDiag have ads?

Neither BattAir nor PowerDiag shows ads.

### Which is updated more often, BattAir or PowerDiag?

BattAir ships an update monthly, and PowerDiag every 2 months. Most recently, BattAir was updated on November 3, 2026 and PowerDiag on October 31, 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.*