# Powerful BMS vs WEST BMS

The clearest difference is iOS requirement: WEST BMS at 11.0 against Powerful BMS's 15.6. 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.

Powerful BMS ships an update every 2 months, WEST BMS monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Powerful BMS | WEST BMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 25 MB | 159 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [Wright Energy Storage Technologies, Inc](https://appshunter.io/developer/1738814783) |

## What reviewers say

### Powerful BMS

[App page](https://appshunter.io/ios/app/powerful-bms-personal/id6451402190)

**Features:** macOS Compatibility

**In-app purchases:** none


### WEST BMS

[App page](https://appshunter.io/ios/app/west-bms/id6480369505)

**In-app purchases:** none


## Frequently asked questions

### Is Powerful BMS free?

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

### Is WEST BMS free?

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

### Do Powerful BMS or WEST BMS have ads?

Neither Powerful BMS nor WEST BMS shows ads.

### Which is updated more often, Powerful BMS or WEST BMS?

Powerful BMS ships an update every 2 months, and WEST BMS monthly. Most recently, Powerful BMS was updated on October 25, 2026 and WEST BMS on October 25, 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.*