# U vs Spektrum+ Smart Lighting

The clearest difference is review sentiment: U at 50% against Spektrum+ Smart Lighting's 0%. U also leads on update cadence (every 2 months vs every 16 months) and iOS requirement (10.0 vs 12.2). Spektrum+ Smart Lighting's advantage is rating (4.3 vs 3.0) and ratings volume (32 vs 1). 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.

Spektrum+ Smart Lighting holds the better App Store score, 4.3 against 3.0. That said, the two scores are not equally well evidenced: Spektrum+ Smart Lighting has 32 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of U's written reviews are positive against 0% of Spektrum+ Smart Lighting's, so the app with the better star average is not the one people write more warmly about.

U ships an update every 2 months, Spektrum+ Smart Lighting every 16 months. The most recent releases landed on June 1, 2026 and July 28, 2026 respectively.

## The numbers

| Metric | U | Spektrum+ Smart Lighting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/u-sync/id1485733488/reviews) | **[4.3 (32 ratings)](https://appshunter.io/ios/app/spektrum-plus-smart-lighting/id1508096350/reviews)** |
| Number of ratings | 1 | **32** |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 16 months |
| Monetization | Free | Free |
| Size | 49 MB | 166 MB |
| Requires iOS | **10.0** | 12.2 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Universal Lighting System](https://appshunter.io/developer/1485568087) | [American Lighting](https://appshunter.io/developer/1087171698) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-sync/id1485733488)

Control your smart lighting system with this app. Set custom schedules for different zones, turn lights on/off manually, and name your zones for easy management. It's a convenient interface for Universal Lighting Systems' Zone Control transformers.

**Highlights:** Set zone schedules, Manual zone control, Name custom zones, Individual zone timing, System on/off control

**Features:** macOS Compatibility

**In-app purchases:** none


### Spektrum+ Smart Lighting

[App page](https://appshunter.io/ios/app/spektrum-plus-smart-lighting/id1508096350)

Control your smart lights with ease, from individual bulbs to entire rooms. Explore millions of color combinations, set personalized schedules, and even use voice commands for hands-free operation. Create the perfect ambiance for any occasion.

**Highlights:** Whole home lighting control, Millions of color combinations, Personalized automated schedules, Advanced color mixing, Voice control integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is Spektrum+ Smart Lighting free?

Spektrum+ Smart Lighting is free to download, with no in-app purchases.

### Which has better reviews, U or Spektrum+ Smart Lighting?

Spektrum+ Smart Lighting is rated higher. U averages 3.0 out of 5 from 1 ratings, while Spektrum+ Smart Lighting averages 4.3 from 32 ratings.

### Do U or Spektrum+ Smart Lighting have ads?

Neither U nor Spektrum+ Smart Lighting shows ads.

### Which is updated more often, U or Spektrum+ Smart Lighting?

U ships an update every 2 months, and Spektrum+ Smart Lighting every 16 months. Most recently, U was updated on June 1, 2026 and Spektrum+ Smart Lighting on July 28, 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.*