# EG4 vs BatteryMonitorBL

The clearest difference is update cadence: EG4 at every 3 weeks against BatteryMonitorBL's every 6 months. EG4 also leads on ratings volume (12 vs 3). BatteryMonitorBL's advantage is review sentiment (50% vs 25%). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 2.3 for EG4 against 2.3 for BatteryMonitorBL. Both are backed by a comparable volume of ratings — 12 and 3 respectively. Written reviews are what separate them: 25% of EG4's written reviews are positive against 50% of BatteryMonitorBL's.

EG4 ships an update every 3 weeks, BatteryMonitorBL every 6 months. The most recent releases landed on September 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | EG4 | BatteryMonitorBL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (12 ratings)](https://appshunter.io/ios/app/eg4/id1571511617/reviews) | [2.3 (3 ratings)](https://appshunter.io/ios/app/batterymonitorbl/id1585654219/reviews) |
| Number of ratings | **12** | 3 |
| Positive reviews | 25.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free | Free |
| Size | 10 MB | 6 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [琼莉 吴](https://appshunter.io/developer/1741032172) | [Shenzhen zetara power system Co.,LTD](https://appshunter.io/developer/1774419082) |

## What reviewers say

### EG4

[App page](https://appshunter.io/ios/app/eg4/id1571511617)

This utility app monitors your device's battery health in real-time. It displays key metrics such as current, temperature, and voltage via Bluetooth connection. Keep track of your battery's vital signs to ensure optimal performance.

**Highlights:** Monitor battery health, Display current, temperature, voltage, Bluetooth connectivity, Real-time status updates, Device compatibility for iPhone/iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### BatteryMonitorBL

[App page](https://appshunter.io/ios/app/batterymonitorbl/id1585654219)

Monitor your device's battery health in real-time. View crucial metrics such as current, temperature, and voltage. Connect via Bluetooth for seamless data acquisition.

**Highlights:** Real-time battery health monitoring, View current, temperature, and voltage, Bluetooth connectivity, Supports iPhone and iPad, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EG4 free?

EG4 is free to download, with no in-app purchases.

### Is BatteryMonitorBL free?

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

### Which has better reviews, EG4 or BatteryMonitorBL?

EG4 and BatteryMonitorBL are both rated 2.3 out of 5 on the App Store, from 12 and 3 ratings respectively.

### Do EG4 or BatteryMonitorBL have ads?

Neither EG4 nor BatteryMonitorBL shows ads.

### Which is updated more often, EG4 or BatteryMonitorBL?

EG4 ships an update every 3 weeks, and BatteryMonitorBL every 6 months. Most recently, EG4 was updated on September 16, 2026 and BatteryMonitorBL on October 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.*