# Sun Energy BMS vs KUNLU BMS

Sun Energy BMS and KUNLU 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.

Sun Energy BMS ships an update every 2 weeks, KUNLU BMS weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Sun Energy BMS | KUNLU BMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 81 MB | 24 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市川页能源有限公司](https://appshunter.io/developer/1835840363) | [Kunlu Electronic Technology (shanghai) Co., Ltd](https://appshunter.io/developer/1886024669) |

## What reviewers say

### Sun Energy BMS

[App page](https://appshunter.io/ios/app/sun-energy-bms/id6756918266)

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

**In-app purchases:** none


### KUNLU BMS

[App page](https://appshunter.io/ios/app/kunlu-bms/id6760737582)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sun Energy BMS free?

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

### Is KUNLU BMS free?

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

### Do Sun Energy BMS or KUNLU BMS have ads?

Neither Sun Energy BMS nor KUNLU BMS shows ads.

### Which is updated more often, Sun Energy BMS or KUNLU BMS?

Sun Energy BMS ships an update every 2 weeks, and KUNLU BMS weekly. Most recently, Sun Energy BMS was updated on October 25, 2026 and KUNLU BMS on October 28, 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.*