# Aray Ess vs BMS Cloud System

The clearest difference is update cadence: BMS Cloud System at every 2 months against Aray Ess's every 3 months. 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.

Aray Ess ships an update every 3 months, BMS Cloud System every 2 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Aray Ess | BMS Cloud System |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 29 MB | 31 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [深圳市傲雷新能源科技有限公司](https://appshunter.io/developer/1830665558) | [家宙 徐](https://appshunter.io/developer/1864198745) |

## What reviewers say

### Aray Ess

[App page](https://appshunter.io/ios/app/aray-ess/id6752018449)

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

**In-app purchases:** none


### BMS Cloud System

[App page](https://appshunter.io/ios/app/bms-cloud-system/id6757020429)

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

**In-app purchases:** none


## Frequently asked questions

### Is Aray Ess free?

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

### Is BMS Cloud System free?

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

### Do Aray Ess or BMS Cloud System have ads?

Neither Aray Ess nor BMS Cloud System shows ads.

### Which is updated more often, Aray Ess or BMS Cloud System?

Aray Ess ships an update every 3 months, and BMS Cloud System every 2 months. Most recently, Aray Ess was updated on October 8, 2026 and BMS Cloud System on October 7, 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.*