# 极空BMS vs E_Test

The clearest difference is rating: 极空BMS at 3.5 against E_Test's 1.8. 极空BMS also leads on review sentiment (35% vs 15%). E_Test's advantage is iOS requirement (9.0 vs 17). On price, ratings volume, 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.

极空BMS holds the better App Store score, 3.5 against 1.8. Both are backed by a comparable volume of ratings — 37 and 31 respectively. Written reviews point the same way: 35% of 极空BMS's written reviews are positive against 15% of E_Test's.

## The numbers

| Metric | 极空BMS | E_Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (37 ratings)](https://appshunter.io/ios/app/bms/id1425725691/reviews)** | [1.8 (31 ratings)](https://appshunter.io/ios/app/e-test/id1478623332/reviews) |
| Number of ratings | **37** | 31 |
| Positive reviews | **34.8% of reviews** | 15.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | Free |
| Size | 36 MB | 20 MB |
| Requires iOS | 17 | **9.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [鹏 张](https://appshunter.io/developer/1425725690) | [杰 唐](https://appshunter.io/developer/1475646045) |

## What reviewers say

### 极空BMS

[App page](https://appshunter.io/ios/app/bms/id1425725691)

This application connects to a battery management system's active equalizer via Bluetooth. It allows for real-time monitoring of parameters and control over equipment settings.

**Highlights:** Real-time status monitoring, Operating parameter settings, Battery management system equipment control, Bluetooth connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


### E_Test

[App page](https://appshunter.io/ios/app/e-test/id1478623332)

This app connects to Bluetooth meters to display real-time voltage, current, and power consumption. It allows users to view historical data through curves and supports DC, AC, and USB meters for simple, direct connection.

**Highlights:** Real-time voltage, current, power display, View power consumption curves, Connects to DC, AC, USB meters, Simple Bluetooth connection, Historical data viewing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 极空BMS free?

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

### Is E_Test free?

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

### Which has better reviews, 极空BMS or E_Test?

极空BMS is rated higher. 极空BMS averages 3.5 out of 5 from 37 ratings, while E_Test averages 1.8 from 31 ratings.

### Do 极空BMS or E_Test have ads?

Neither 极空BMS nor E_Test shows ads.

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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.*