# CMSView vs NVR UMViewer

The clearest difference is update cadence: NVR UMViewer at weekly against CMSView's every 29 months. CMSView's advantage is iOS requirement (10.0 vs 15.1). 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.

CMSView ships an update every 29 months, NVR UMViewer weekly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | CMSView | NVR UMViewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Weekly** |
| Size | 63 MB | 43 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Clear2there](https://appshunter.io/developer/1658415566) | [DongHyuk Kim](https://appshunter.io/developer/1436315516) |

## What reviewers say

### CMSView

[App page](https://appshunter.io/ios/app/cmsview/id1658415740)

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

**In-app purchases:** none


### NVR UMViewer

[App page](https://appshunter.io/ios/app/nvr-umviewer/id6749358031)

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

**In-app purchases:** none


## Frequently asked questions

### Is CMSView free?

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

### Is NVR UMViewer free?

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

### Do CMSView or NVR UMViewer have ads?

Neither CMSView nor NVR UMViewer shows ads.

### Which is updated more often, CMSView or NVR UMViewer?

CMSView ships an update every 29 months, and NVR UMViewer weekly. Most recently, CMSView was updated on November 3, 2026 and NVR UMViewer on November 8, 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.*