# SmartWatch Sync BT Notifier vs U

The clearest difference is in-app purchases: U at none against SmartWatch Sync BT Notifier's 2. SmartWatch Sync BT Notifier's advantage is update cadence (daily vs fortnightly) and ratings volume (1.6K vs 507). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. SmartWatch Sync BT Notifier sells 2 in-app purchases, starting at $4.99 per month. U asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for SmartWatch Sync BT Notifier against 4.0 for U. Both are backed by a comparable volume of ratings — 1.6K and 507 respectively. Written reviews are what separate them: 8% of SmartWatch Sync BT Notifier's written reviews are positive against 15% of U's.

SmartWatch Sync BT Notifier ships an update daily, U fortnightly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SmartWatch Sync BT Notifier | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (1.6K ratings)](https://appshunter.io/ios/app/smartwatch-sync-bt-notifier/id1612935697/reviews) | **[4.0 (507 ratings)](https://appshunter.io/ios/app/u-watch/id6444815466/reviews)** |
| Number of ratings | **1.6K** | 507 |
| Positive reviews | 7.7% of reviews | **15.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Fortnightly |
| Monetization | Subscription | **Free** |
| Size | 6 MB | 77 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tung Lam Duong](https://appshunter.io/developer/1612403436) | [安徽华歆电子科技有限公司](https://appshunter.io/developer/1657071585) |

## What reviewers say

### SmartWatch Sync BT Notifier

[App page](https://appshunter.io/ios/app/smartwatch-sync-bt-notifier/id1612935697)

Connect your smartwatch to your smartphone to sync and transfer data. Set activity alarms for workouts like walking, running, or swimming. Track your path and measure speed using your device's location services.

**Highlights:** Smartwatch to smartphone data sync, Activity tracking (walk, run, gym, swim), Path recording and speed measurement, Bluetooth connection setup, Activity alarm notifications

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership Monthly | $4.99 | per month |
| Premium Membership Yearly | $19.99 | per year |


### U

[App page](https://appshunter.io/ios/app/u-watch/id6444815466)

This application is designed to connect with smart wearable devices, specifically telephone watches, produced by "Huaxin Electronics". It enables interaction with digital electronics and other products from the same manufacturer.

**Highlights:** Connects to smart wearable devices, Supports telephone watches, Works with Huaxin Electronics products, Digital electronics integration

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Useful features
- 💡 Customizable watch faces

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔋 Poor battery life
- 🔍 Inaccurate health tracking

**Reported bugs**

- Watch time/date resets after synchronization
- App crashes frequently
- Bluetooth connection issues

**Requested features**

- Add support for more apps and messaging platforms
- Improve synchronization between watch and app
- Provide more customization options


## Frequently asked questions

### Is SmartWatch Sync BT Notifier free?

SmartWatch Sync BT Notifier is free to download, with in-app purchases available.

### Is U free?

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

### Which has better reviews, SmartWatch Sync BT Notifier or U?

U is rated higher. SmartWatch Sync BT Notifier averages 3.9 out of 5 from 1.6K ratings, while U averages 4.0 from 507 ratings.

### Do SmartWatch Sync BT Notifier or U have ads?

Neither SmartWatch Sync BT Notifier nor U shows ads.

### Which is updated more often, SmartWatch Sync BT Notifier or U?

SmartWatch Sync BT Notifier ships an update daily, and U fortnightly. Most recently, SmartWatch Sync BT Notifier was updated on September 23, 2026 and U on September 22, 2026.

---

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