# BatteryBar: All Your Batteries — Battery levels for all devices

> Centralized battery monitoring for Apple devices with notifications and widgets. (iPhone/iPad app by Daisuke Hattori.)

- Source: https://appshunter.io/ios/app/batterybar-all-your-batteries/id6791232773 (this page in markdown: same URL + `.md`)
- Developer: [Daisuke Hattori](https://appshunter.io/developer/6791232775)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 4 MB
- Languages: American English, Japanese
- Released: 2026-09-07
- Data updated: 2026-10-31
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/batterybar-all-your-batteries/id6791232773/reviews.md

## What is BatteryBar?

Check the approximate battery level of every device you own, all in one place — right from your iPhone or iPad.

BatteryBar is a battery management app that shows the approximate battery level of this iPhone/iPad along with your connected Mac and Apple Watch, all on a single screen. It supports a Home Screen widget and low-battery notifications, so it helps you avoid forgetting to charge. Pair it with the Mac app to also see the battery level of Bluetooth accessories connected to your Mac.

KEY FEATURES
- Shows the battery level of this iPhone/iPad
- Combines the battery level of iPhone, iPad, Mac, and Apple Watch in one view
- Home Screen widget shows up to 4 devices at once
- Notifies you when battery drops below 20% (won't notify again while charging)

PRO FEATURES (one-time purchase, no subscription)
- Apple Watch face complication
- Per-device notification threshold and quiet hours
- Battery level for Bluetooth accessories connected to your Mac (mouse, keyboard, earbuds, etc.)
- Switch the device list between grid and list layout
- Widget background colors (Dark Red, Sky Blue, Silver, and more — 7 colors)
- Lock Screen widget (shows the battery of one device you choose, in a circular style)

ABOUT THE BATTERY LEVELS SHOWN
- The levels shown are approximate. They can differ from the actual level by a few percent.
- The battery level of an iPhone or iPad is shown in 5% steps because of how iOS reports it.
- For other devices, the app shows the last value it received and how long ago that was. Depending on the connection, updates may take some time to appear.

BEFORE YOU START
- To see your Mac's battery or its connected Bluetooth accessories, use the companion app "BatteryBar for Mac"
- Bluetooth must be turned on
- See the support page and Privacy Policy for details

## Key features

- View battery levels for iPhone, iPad, Mac, and Apple Watch
- Home Screen widget support
- Low-battery notifications
- Monitor Bluetooth accessory battery levels
- Apple Watch face complication
- Customizable notification thresholds

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| BatteryBar Pro | $5.99 | one-time |


## Is BatteryBar safe?

Not enough ratings yet to assess BatteryBar.

## Is BatteryBar legit?

BatteryBar: All Your Batteries has limited verification signals. The AppsHunter Legitimacy Score for BatteryBar is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/batterybar-all-your-batteries/id6791232773/reviews.md

### 4/5 — 反映

*2026-09-25*

反映が遅かったり更新しても正確ではない時がある。アプリ自体は便利なので改善待ってます

**Developer response:** ご利用ありがとうございます。ご不便をおかけしており申し訳ありません。

残量表示は各端末が自分で把握している値をそのまま表示しており、iPhone・iPadはiOS 17以降OS側の仕様で5%刻みでしか取得できず、Bluetoothイヤホンやマウスなど他社製機器も、機器側が残量を粗く・数十分に一度しか送ってこないことが多いため、反映の遅れや誤差として見えることがあります。アプリ側だけでは解決できない制約ですが、その中でも更新の精度を上げられる部分は引き続き改善していきます。

温かいお言葉、ありがとうございます。

### 1/5 — 数値がデタラメ

*2026-09-24*

バッテリーの残量を確認できるアプリのようですが、実際に残量が90%あっても100%と表示になっています。
有料課金したのに残念です。

**Developer response:** ご購入・ご利用ありがとうございます。ご期待に沿えず申し訳ありません。

このアプリの残量表示は、各端末が自分で把握している値をそのまま表示する仕組みです。iPhone・iPadは、iOS 17以降、OS側の仕様により電池残量を5%刻み（100%→95%→90%…）でしか取得できず、これはこのアプリに限らずどのアプリにも共通する制約です。また、イヤホンやマウスなど他社製のBluetooth機器は、機器自体が残量を粗く、かつ数十分に一度しか送ってこないことが多く、こちらも機器側の仕様によるものです（Apple純正機器を除きます）。

もしよろしければ、どの機器の残量が実際と違って見えたか教えていただけますと、確認いたします。

### 1/5 — まともに起動しない。プライバシーへのアクセス許可を求めてくる。

*2026-09-20*

iPhone17のiOS27 で使用しましたが、プライバシーへのアクセスを求められため拒否したところ、そのままクラッシュしました。
なぜプライバシーデータへアクセする必要があるのか分からないが、個人情報もりもりのスマートフォンでは使いたくないです。

**Developer response:** ご利用ありがとうございます。ご不便をおかけし申し訳ありません。

本アプリがお願いしている許可はBluetoothのみで、Mac・Apple Watch・その他の端末など、お手持ちの他の端末とバッテリー残量を近距離でやり取りするために使用しています(この端末単体の残量表示には不要です)。

許可しない場合、他の端末の情報は表示されませんが、アプリ自体が終了する動作は想定しておらず、現在の最新版で確認した限りでは発生しませんでした。お手数ですが、発生時の端末機種・iOSのバージョンなどを下記サポートページへのコメントもしくは記載のメールアドレスまでお知らせいただけますと、詳しく調査いたします。

https://ketiketidenki.com/batterybar/16643/

## Frequently asked questions about BatteryBar

### Does BatteryBar have ads?

No, BatteryBar does not contain advertisements. The app is free to download and use, with optional pro features available as a one-time purchase.

### How does BatteryBar show Mac battery levels?

To see your Mac's battery level or its connected Bluetooth accessories, you need to use the companion app "BatteryBar for Mac." Ensure Bluetooth is turned on for accessory monitoring.

### What are the pro features in BatteryBar?

Pro features include an Apple Watch face complication, per-device notification thresholds, quiet hours, battery level for Bluetooth accessories, list/grid layout switching, and customizable widget background colors. These are available via a one-time purchase.

### Can BatteryBar notify me about low batteries?

Yes, BatteryBar provides low-battery notifications, alerting you when a device's battery drops below 20%. It avoids repeated notifications while a device is charging.

### What devices are supported by BatteryBar?

BatteryBar supports monitoring the battery levels of your iPhone, iPad, Mac, and Apple Watch. It can also display battery levels for Bluetooth accessories connected to your Mac.

### How often is BatteryBar updated?

The latest version of BatteryBar is 1.2.4, and it was last updated on October 6, 2026. This indicates a relatively recent update, suggesting ongoing support and development.

### Is BatteryBar available on Android?

Based on the provided information, BatteryBar is designed for Apple devices, specifically supporting iPhone, iPad, and Apple Watch. It is not available for Android devices.

### What is the age rating for BatteryBar?

BatteryBar has an age rating of 4+, making it suitable for a wide range of users. This rating suggests that the app's content is appropriate for young children.

## Version history (last 5 releases)

### 1.2.8 — 2026-10-23

- Added a Lock Screen widget (Pro) that shows the battery of one device you choose in a circular style. Choose the device in the app's Widgets tab.
- Revised the app description to make clear that the battery levels shown are approximate.

### 1.2.7 — 2026-10-11

- Fixed an issue where two rings overlapped in the small widget when showing two devices.
- Improved how quickly the widget reflects changes to the devices you display.
- Fixed an issue where the Apple Watch complication did not update or stayed at "--".
- Selected devices now refresh more quickly while the app is open.

### 1.2.4 — 2026-10-06

- You can now change the widget's background color (Pro). Choose from 7 colors: Dark Red, Sky Blue, Dark Green, Pink, Orange, Dark Brown, and Silver.

### 1.2.3 — 2026-09-21

Improved the widget's readability and accuracy. Device names, elapsed times and other text now use the same color as the battery percentage (black in Light Mode, white in Dark Mode). Tapping anywhere on the widget now opens the app and refreshes to the latest values. We also fixed cases where the widget and the app showed different battery levels or elapsed times.

### 1.2.2 — 2026-09-20

Fixed an issue where a battery reading relayed from another device or through your Mac could be shown as freshly updated even when it hadn't actually changed. Third-party accessories (non-Apple mice, keyboards, etc.) that have been disconnected now drop off the list within about 2 hours instead of lingering for up to 2 days.

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## Related topics

[batty for batteries](https://appshunter.io/ios/topics/batty-for-batteries)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*