# Battery Master 12V vs Bulek Driver

Battery Master 12V and Bulek Driver are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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, Bulek Driver monthly. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Battery Master 12V | Bulek Driver |
| --- | --- | --- |
| 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 | **Monthly** |
| Monetization | Free | — |
| Size | 39 MB | 69 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [Tawfiq Bahri](https://appshunter.io/developer/1806571500) |

## 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


### Bulek Driver

[App page](https://appshunter.io/ios/app/bulek-driver/id6744300893)

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

**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 Bulek Driver free?

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

### Do Battery Master 12V or Bulek Driver have ads?

Neither Battery Master 12V nor Bulek Driver shows ads.

### Which is updated more often, Battery Master 12V or Bulek Driver?

Battery Master 12V ships an update every 6 weeks, and Bulek Driver monthly. Most recently, Battery Master 12V was updated on September 10, 2026 and Bulek Driver on September 17, 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.*