# 极空BMS vs Udan Live

The clearest difference is iOS requirement: Udan Live at 12.0 against 极空BMS's 17. On price, update cadence, 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 ships an update every 3 weeks, Udan Live every 4 weeks. The most recent releases landed on October 19, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 极空BMS | Udan Live |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (37 ratings)](https://appshunter.io/ios/app/bms/id1425725691/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 34.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 36 MB | 41 MB |
| Requires iOS | 17 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [鹏 张](https://appshunter.io/developer/1425725690) | [Anhui Udan Technology Co., Ltd.](https://appshunter.io/developer/1593792520) |

## 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


### Udan Live

[App page](https://appshunter.io/ios/app/udan-live/id1605693458)

**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 Udan Live free?

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

### Do 极空BMS or Udan Live have ads?

Neither 极空BMS nor Udan Live shows ads.

### Which is updated more often, 极空BMS or Udan Live?

极空BMS ships an update every 3 weeks, and Udan Live every 4 weeks. Most recently, 极空BMS was updated on October 19, 2026 and Udan Live on October 2, 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.*