# NVS Viewer vs WTW

The clearest difference is update cadence: WTW at every 2 months against NVS Viewer's every 60 months. WTW also leads on iOS requirement (9.3 vs 12.0). 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.

NVS Viewer ships an update every 60 months, WTW every 2 months. The most recent releases landed on November 11, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | NVS Viewer | WTW |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 6.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 60 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 9 MB | 58 MB |
| Requires iOS | 12.0 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [キング通信工業株式会社](https://appshunter.io/developer/886661736) | [Wireless Tsukamoto CO., LTD.](https://appshunter.io/developer/1381299984) |

## What reviewers say

### NVS Viewer

[App page](https://appshunter.io/ios/app/nvs-viewer/id1086866918)

**Features:** macOS Compatibility

**In-app purchases:** none


### WTW

[App page](https://appshunter.io/ios/app/wtw-kame/id1456226706)

This utility app allows users to manage and view footage from a turtle solar security camera. It supports adding cameras, adjusting settings, saving images, and configuring features like alarms and motion detection.

**Highlights:** View camera footage, Add and browse cameras, Adjust camera settings, Save footage as images, Configure speaker function, Set alarms and alerts, Manage motion detection

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

**In-app purchases:** none


## Frequently asked questions

### Is NVS Viewer free?

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

### Is WTW free?

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

### Do NVS Viewer or WTW have ads?

Neither NVS Viewer nor WTW shows ads.

### Which is updated more often, NVS Viewer or WTW?

NVS Viewer ships an update every 60 months, and WTW every 2 months. Most recently, NVS Viewer was updated on November 11, 2026 and WTW on November 2, 2026.

---

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