# Battery Master 12V vs Battery Widget

The clearest difference is review sentiment: Battery Widget at 50% against Battery Master 12V's 0%. Battery Widget also leads on rating (4.0 vs 3.4) and update cadence (every 9 days vs every 6 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Battery Widget holds the better App Store score, 4.0 against 3.4. Both are backed by a comparable volume of ratings — 5 and 22 respectively. Written reviews point the same way: 0% of Battery Master 12V's written reviews are positive against 50% of Battery Widget's.

Battery Master 12V ships an update every 6 weeks, Battery Widget every 9 days. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Battery Master 12V | Battery Widget |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/battery-master-12v/id1480710112/reviews) | **[4.0 (22 ratings)](https://appshunter.io/ios/app/battery-widget/id6755721607/reviews)** |
| Number of ratings | 5 | **22** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free | Free |
| Size | 39 MB | 60 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [TERMUX LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1849572138) |

## 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 Widget

[App page](https://appshunter.io/ios/app/battery-widget/id6755721607)

Track your device's battery level with customizable widgets and fun sticker packs. Receive smart charging alerts to help preserve battery health and enjoy witty quotes with every check. The app offers a dark, low-power alert screen for better visibility and power conservation.

**Highlights:** Glanceable battery widgets, Funny quote feed, Customizable sticker packs, Stickers synced to battery percentage, Smart charge percentage alerts, Dark, low-power alert screen

**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 Battery Widget free?

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

### Which has better reviews, Battery Master 12V or Battery Widget?

Battery Widget is rated higher. Battery Master 12V averages 3.4 out of 5 from 5 ratings, while Battery Widget averages 4.0 from 22 ratings.

### Do Battery Master 12V or Battery Widget have ads?

Neither Battery Master 12V nor Battery Widget shows ads.

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

Battery Master 12V ships an update every 6 weeks, and Battery Widget every 9 days. Most recently, Battery Master 12V was updated on October 17, 2026 and Battery Widget on October 11, 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.*