# batteryウィジェット　バッテリー残量をサクサク確認 vs Battery Master 12V

The clearest difference is review sentiment: batteryウィジェット　バッテリー残量をサクサク確認 at 59% against Battery Master 12V's 0%. batteryウィジェット　バッテリー残量をサクサク確認 also leads on rating (4.0 vs 3.4). Battery Master 12V's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 11 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

batteryウィジェット　バッテリー残量をサクサク確認 holds the better App Store score, 4.0 against 3.4. That said, the two scores are not equally well evidenced: Battery Master 12V has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 59% of batteryウィジェット　バッテリー残量をサクサク確認's written reviews are positive against 0% of Battery Master 12V's.

batteryウィジェット　バッテリー残量をサクサク確認 ships an update every 11 months, Battery Master 12V every 6 weeks. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | batteryウィジェット　バッテリー残量をサクサク確認 | Battery Master 12V |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/battery/id1447344860/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/battery-master-12v/id1480710112/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | **58.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 39 MB | 39 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuma Okamura](https://appshunter.io/developer/1256271891) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### batteryウィジェット　バッテリー残量をサクサク確認

[App page](https://appshunter.io/ios/app/battery/id1447344860)

This app helps you monitor your iPhone's battery life and data usage. It provides insights into how long you can listen to music or use other apps based on your current charge, and offers tips to conserve battery and avoid data limits.

**Highlights:** Battery level monitoring, Music playback time estimate, Memory usage diagnosis, Battery saving tips, Data usage check, Optimizes iPhone performance

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is batteryウィジェット　バッテリー残量をサクサク確認 free?

batteryウィジェット　バッテリー残量をサクサク確認 is free to download, with no in-app purchases.

### Is Battery Master 12V free?

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

### Which has better reviews, batteryウィジェット　バッテリー残量をサクサク確認 or Battery Master 12V?

batteryウィジェット　バッテリー残量をサクサク確認 is rated higher. batteryウィジェット　バッテリー残量をサクサク確認 averages 4.0 out of 5 from 1 ratings, while Battery Master 12V averages 3.4 from 5 ratings.

### Do batteryウィジェット　バッテリー残量をサクサク確認 or Battery Master 12V have ads?

batteryウィジェット　バッテリー残量をサクサク確認 shows ads; Battery Master 12V does not.

### Which is updated more often, batteryウィジェット　バッテリー残量をサクサク確認 or Battery Master 12V?

batteryウィジェット　バッテリー残量をサクサク確認 ships an update every 11 months, and Battery Master 12V every 6 weeks. Most recently, batteryウィジェット　バッテリー残量をサクサク確認 was updated on September 26, 2026 and Battery Master 12V on September 10, 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.*