# Battery Master 12V vs Battery Genie Debug

The clearest difference is update cadence: Battery Master 12V at every 6 weeks against Battery Genie Debug's every 13 months. Battery Genie Debug's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Battery Master 12V ships an update every 6 weeks, Battery Genie Debug every 13 months. The most recent releases landed on September 10, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Battery Master 12V | Battery Genie Debug |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (5 ratings)](https://appshunter.io/ios/app/battery-master-12v/id1480710112/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 13 months |
| Monetization | Free | — |
| Size | 39 MB | 32 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [RPS Battery Co.,Ltd](https://appshunter.io/developer/1645812484) |

## What reviewers say

### Battery Master 12V

[App page](https://appshunter.io/ios/app/battery-master-12v/id1480710112)

This tool detects and tests lead-acid batteries, assessing CCA and health. It calculates remaining battery life based on temperature and CCA data. Users can also test cranking and charging systems, with all results shareable and printable.

**Highlights:** Lead-acid battery detection, Test battery CCA and health, Calculate available use life, Test cranking system, Test charging system, Share and print test results

**Features:** macOS Compatibility

**In-app purchases:** none


### Battery Genie Debug

[App page](https://appshunter.io/ios/app/battery-genie-debug/id6496861018)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Battery Master 12V free?

Battery Master 12V is free to download, with no in-app purchases.

### Is Battery Genie Debug free?

Battery Genie Debug is free to download, with no in-app purchases.

### Do Battery Master 12V or Battery Genie Debug have ads?

Neither Battery Master 12V nor Battery Genie Debug shows ads.

### Which is updated more often, Battery Master 12V or Battery Genie Debug?

Battery Master 12V ships an update every 6 weeks, and Battery Genie Debug every 13 months. Most recently, Battery Master 12V was updated on September 10, 2026 and Battery Genie Debug on September 13, 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.*