# Linux NVR Mobile Viewer vs 51See

The clearest difference is review sentiment: 51See at 100% against Linux NVR Mobile Viewer's 0%. 51See also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Linux NVR Mobile Viewer ships an update every 2 months, 51See every 3 weeks. The most recent releases landed on September 13, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Linux NVR Mobile Viewer | 51See |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 71 MB | 33 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EMSTONE](https://appshunter.io/developer/561848811) | [大帅 李](https://appshunter.io/developer/873894806) |

## What reviewers say

### Linux NVR Mobile Viewer

[App page](https://appshunter.io/ios/app/linux-nvr-mobile-viewer/id561848768)

Monitor live camera feeds from your NVR/DVR devices. View multiple cameras simultaneously in various grid layouts and control PTZ functions. Receive event notifications for enhanced security.

**Highlights:** NVR/DVR device management, Live camera monitoring, Multi-camera grid layouts, PTZ control, Event notifications

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

**In-app purchases:** none


### 51See

[App page](https://appshunter.io/ios/app/51see/id873894803)

This app provides a comprehensive IoT platform for smart home and industry monitoring. It includes device hardware, cloud server systems, and client solutions, with options for customized development and source code.

**Highlights:** Smart home and industry monitoring, Device hardware and SDK customization, Cloud server system development, Client solutions, Customizable system development

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Linux NVR Mobile Viewer free?

Linux NVR Mobile Viewer is free to download, with no in-app purchases.

### Is 51See free?

51See is free to download, with no in-app purchases.

### Do Linux NVR Mobile Viewer or 51See have ads?

Neither Linux NVR Mobile Viewer nor 51See shows ads.

### Which is updated more often, Linux NVR Mobile Viewer or 51See?

Linux NVR Mobile Viewer ships an update every 2 months, and 51See every 3 weeks. Most recently, Linux NVR Mobile Viewer was updated on September 13, 2026 and 51See on June 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*