# Niagara 4Valve Controller vs UNVSmartVision

The clearest difference is update cadence: Niagara 4Valve Controller at every 2 months against UNVSmartVision's every 7 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.

Niagara 4Valve Controller ships an update every 2 months, UNVSmartVision every 7 months. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Niagara 4Valve Controller | UNVSmartVision |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Size | 27 MB | 55 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Niagara Automation](https://appshunter.io/developer/1459220336) | [西安宇视信息科技有限公司](https://appshunter.io/developer/1590845876) |

## What reviewers say

### Niagara 4Valve Controller

[App page](https://appshunter.io/ios/app/niagara-4valve-controller/id1641708221)

**Features:** macOS Compatibility

**In-app purchases:** none


### UNVSmartVision

[App page](https://appshunter.io/ios/app/unvsmartvision/id6745684386)

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

**In-app purchases:** none


## Frequently asked questions

### Is Niagara 4Valve Controller free?

Niagara 4Valve Controller is free to download, with no in-app purchases.

### Is UNVSmartVision free?

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

### Do Niagara 4Valve Controller or UNVSmartVision have ads?

Neither Niagara 4Valve Controller nor UNVSmartVision shows ads.

### Which is updated more often, Niagara 4Valve Controller or UNVSmartVision?

Niagara 4Valve Controller ships an update every 2 months, and UNVSmartVision every 7 months. Most recently, Niagara 4Valve Controller was updated on October 12, 2026 and UNVSmartVision on October 15, 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.*