Stellar Wi vs U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stellar Wi
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.
- Wireless Wi-Fi control
- On/Off functionality
- Smooth brightness adjustment
- Millions of color choices
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Stellar - The smart way to control your Sansi bulbs. The Stellar Wi-Fi app allows you to turn your Sansi smart bulbs on and off wirelessly through Wi-Fi, adjust brightness smoothly and choose your favorite color among millions.
U
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.
- Remote device control
- Household member sharing
- Energy measurement sockets
- Security camera monitoring
- Sensor integration (motion, smoke, gas)
- Smart lighting control
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The U-Smart application manages and controls your smart home built with UMAX U-Smart devices. You can easily control and share your smart home devices with other members of your household. Among the UMAX U-Smart devices you can find smart sockets with energy measurement, LED RGB Bulbs, night lamps, security IP cameras, door sensors, motion sensors, smoke and gas sensors, and others. What are you waiting for? Your smart home is here!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Stellar Wi | U |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (17 ratings) | 4.5 (10 ratings) — better |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 17 — better | 10 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 58 MB | 200 MB |
| Age rating | 4+ | 4+ |
| Developer | Shanghai Sansi Electronic Engineering Co., Ltd | Umax Czech a.s. |
Customer experience
Stellar Wi
U
In-app purchases
Stellar Wi
No in-app purchases
U
No in-app purchases
