# WEST BMS vs JKESS

The clearest difference is update cadence: WEST BMS at monthly against JKESS's every 8 months. WEST BMS also leads on iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

WEST BMS ships an update monthly, JKESS every 8 months. The most recent releases landed on December 3, 2025 and September 20, 2026 respectively.

## The numbers

| Metric | WEST BMS | JKESS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 8 months |
| Size | 159 MB | 26 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wright Energy Storage Technologies, Inc](https://appshunter.io/developer/1738814783) | [Shenzhen Nengyi Electronic Technology Co.,Ltd](https://appshunter.io/developer/1745332820) |

## What reviewers say

### WEST BMS

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

**In-app purchases:** none


### JKESS

[App page](https://appshunter.io/ios/app/jkess/id6502400975)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WEST BMS free?

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

### Is JKESS free?

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

### Do WEST BMS or JKESS have ads?

Neither WEST BMS nor JKESS shows ads.

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

WEST BMS ships an update monthly, and JKESS every 8 months. Most recently, WEST BMS was updated on December 3, 2025 and JKESS on September 20, 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.*