# Stellar Wi vs U

The clearest difference is rating: U at 4.5 against Stellar Wi's 1.5. U also leads on review sentiment (33% vs 0%). On price, ratings volume, update cadence and ads there is nothing between them.

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

U holds the better App Store score, 4.5 against 1.5. Both are backed by a comparable volume of ratings — 17 and 10 respectively. Written reviews point the same way: 0% of Stellar Wi's written reviews are positive against 33% of U's.

Stellar Wi ships an update every 5 weeks, U every 2 months. The most recent releases landed on October 11, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Stellar Wi | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (17 ratings)](https://appshunter.io/ios/app/stellar-wi-fi/id965055647/reviews) | **[4.5 (10 ratings)](https://appshunter.io/ios/app/u-smart/id1444766879/reviews)** |
| Number of ratings | **17** | 10 |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 58 MB | 200 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Sansi Electronic Engineering Co., Ltd](https://appshunter.io/developer/965055646) | [Umax Czech a.s.](https://appshunter.io/developer/1444766878) |

## What reviewers say

### Stellar Wi

[App page](https://appshunter.io/ios/app/stellar-wi-fi/id965055647)

Control your Sansi smart bulbs wirelessly via Wi-Fi. Adjust brightness and select from millions of colors to set the perfect ambiance. Effortlessly turn your lights on and off.

**Highlights:** Wireless Wi-Fi control, On/Off functionality, Smooth brightness adjustment, Millions of color choices

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-smart/id1444766879)

Control and manage your smart home devices from a single application. Easily share access with household members and monitor various UMAX U-Smart devices like cameras, sensors, and lighting.

**Highlights:** Remote device control, Household member sharing, Energy measurement sockets, Security camera monitoring, Sensor integration (motion, smoke, gas), Smart lighting control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stellar Wi free?

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

### Is U free?

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

### Which has better reviews, Stellar Wi or U?

U is rated higher. Stellar Wi averages 1.5 out of 5 from 17 ratings, while U averages 4.5 from 10 ratings.

### Do Stellar Wi or U have ads?

Neither Stellar Wi nor U shows ads.

### Which is updated more often, Stellar Wi or U?

Stellar Wi ships an update every 5 weeks, and U every 2 months. Most recently, Stellar Wi was updated on October 11, 2026 and U on September 14, 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.*