# U vs Rabbit Sync

The clearest difference is review sentiment: Rabbit Sync at 100% against U's 0%. Rabbit Sync also leads on rating (5.0 vs 1.0) and update cadence (weekly vs every 3 months). U's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Rabbit Sync sells 2 in-app purchases, starting at $0.99 per month. U asks for nothing beyond the download.

Rabbit Sync holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of U's written reviews are positive against 100% of Rabbit Sync's.

U ships an update every 3 months, Rabbit Sync weekly. The most recent releases landed on June 1, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | U | Rabbit Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/u-photo/id1481806535/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rabbit-sync/id1672824433/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 67 MB | 2 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [宁波万由电子科技有限公司](https://appshunter.io/developer/1228091713) | [晓光 张](https://appshunter.io/developer/1672824435) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-photo/id1481806535)

Browse, edit, and manage photos stored on your U-NAS device. Organize them into albums and view them chronologically. Share photos and albums with friends and sync between your mobile device and U-NAS.

**Highlights:** Browse U-NAS photos, Online photo editing, Photo management, Album creation and management, Timeline view, Photo sharing, Mobile to U-NAS sync

**Features:** macOS Compatibility

**In-app purchases:** none


### Rabbit Sync

[App page](https://appshunter.io/ios/app/rabbit-sync/id1672824433)

This app backs up your iOS camera photos and videos to a local server using WebDAV. It downloads originals from iCloud, preserving all EXIF metadata for a complete backup of your memories.

**Highlights:** Syncs photos and videos, Supports WebDAV protocol, Downloads originals from iCloud, Preserves EXIF metadata, Local server backup

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $11.00 | per year |


## Frequently asked questions

### Is U free?

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

### Is Rabbit Sync free?

Rabbit Sync is free to download, with in-app purchases available.

### Which has better reviews, U or Rabbit Sync?

Rabbit Sync is rated higher. U averages 1.0 out of 5 from 1 ratings, while Rabbit Sync averages 5.0 from 1 ratings.

### Do U or Rabbit Sync have ads?

Neither U nor Rabbit Sync shows ads.

### Which is updated more often, U or Rabbit Sync?

U ships an update every 3 months, and Rabbit Sync weekly. Most recently, U was updated on June 1, 2026 and Rabbit Sync on September 7, 2026.

---

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