# uSpectrumX vs Sunray

The clearest difference is iOS requirement: uSpectrumX at 9.0 against Sunray's 15.0. 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.

uSpectrumX ships an update every 3 months, Sunray every 4 months. The most recent releases landed on September 16, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | uSpectrumX | Sunray |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Size | 25 MB | 3 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [Taiwan Radiance Co., Ltd.](https://appshunter.io/developer/1788178172) |

## What reviewers say

### uSpectrumX

[App page](https://appshunter.io/ios/app/uspectrumx/id1318581445)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sunray

[App page](https://appshunter.io/ios/app/sunray-lighting/id6740053538)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is uSpectrumX free?

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

### Is Sunray free?

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

### Do uSpectrumX or Sunray have ads?

Neither uSpectrumX nor Sunray shows ads.

### Which is updated more often, uSpectrumX or Sunray?

uSpectrumX ships an update every 3 months, and Sunray every 4 months. Most recently, uSpectrumX was updated on September 16, 2026 and Sunray on September 7, 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.*