# U vs JSDE

The clearest difference is iOS requirement: U at 10.0 against JSDE's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 12, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | U | JSDE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/u-sync/id1485733488/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 49 MB | 14 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Universal Lighting System](https://appshunter.io/developer/1485568087) | [JAMF Software](https://appshunter.io/developer/290965542) |

## 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


### JSDE

[App page](https://appshunter.io/ios/app/jsde/id6499516026)

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is JSDE free?

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

### Do U or JSDE have ads?

Neither U nor JSDE shows ads.

### Which is updated more often, U or JSDE?

U ships an update every 2 months, and JSDE every 2 months. Most recently, U was updated on October 12, 2026 and JSDE on October 19, 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.*