# NAS System Manager vs U

The clearest difference is update cadence: U at fortnightly against NAS System Manager's every 16 months. 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.

NAS System Manager ships an update every 16 months, U fortnightly. The most recent releases landed on June 1, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | NAS System Manager | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/u-file/id1272474965/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 30 MB | 96 MB |
| Requires iOS | **8.0** | 9.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Wooi Kiang Cheah](https://appshunter.io/developer/826354682) | [Ningbo Wanyou Electronic Technology Co., Ltd.](https://appshunter.io/developer/1228091713) |

## What reviewers say

### NAS System Manager

[App page](https://appshunter.io/ios/app/nas-system-manager/id922406155)

Monitor and manage your Network Attached Storage (NAS) devices directly from your mobile phone. This free utility provides a convenient way to keep an eye on your NAS system's status and operations on the go.

**Highlights:** Mobile NAS monitoring, NAS system management, Free utility, On-the-go access

**Features:** macOS Compatibility

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-file/id1272474965)

Manage documents stored on u-nas and other FTP/WebDAV servers. Download files to your device, upload files in reverse, and perform local file operations like editing and deleting. Requires U-NAS for full functionality.

**Highlights:** Manage FTP and WebDAV servers, Download files to mobile device, Upload files from mobile device, Edit local files, Delete local files, Manage multiple server devices

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NAS System Manager free?

NAS System Manager is free to download, with no in-app purchases.

### Is U free?

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

### Do NAS System Manager or U have ads?

Neither NAS System Manager nor U shows ads.

### Which is updated more often, NAS System Manager or U?

NAS System Manager ships an update every 16 months, and U fortnightly. Most recently, NAS System Manager was updated on June 1, 2026 and U on September 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.*