# KLS Electronic vs FN BMS

KLS Electronic and FN BMS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

KLS Electronic ships an update every 3 months, FN BMS every 7 months. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | KLS Electronic | FN BMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Size | 36 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Kinglisheng New Energy Technology Co., Ltd.](https://appshunter.io/developer/1807937254) | [Dongguan Empowering Technology Co., Ltd](https://appshunter.io/developer/1822715475) |

## What reviewers say

### KLS Electronic

[App page](https://appshunter.io/ios/app/kls-electronic/id6744517167)

**Features:** macOS Compatibility

**In-app purchases:** none


### FN BMS

[App page](https://appshunter.io/ios/app/fn-bms/id6747742168)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KLS Electronic free?

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

### Is FN BMS free?

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

### Do KLS Electronic or FN BMS have ads?

Neither KLS Electronic nor FN BMS shows ads.

### Which is updated more often, KLS Electronic or FN BMS?

KLS Electronic ships an update every 3 months, and FN BMS every 7 months. Most recently, KLS Electronic was updated on September 30, 2026 and FN BMS on October 3, 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.*