# uSpectrumX vs Epson Spectrometer

The clearest difference is iOS requirement: uSpectrumX at 9.0 against Epson Spectrometer's 16.0. 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 3 months. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | uSpectrumX | Epson Spectrometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/epson-spectrometer/id1558626654/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | — | Free |
| Size | 25 MB | 57 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [Seiko Epson Corporation](https://appshunter.io/developer/326876195) |

## What reviewers say

### uSpectrumX

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Epson Spectrometer

[App page](https://appshunter.io/ios/app/epson-spectrometer/id1558626654)

This utility app enables precise color measurement of indoor and outdoor materials using a compatible spectrophotometer. It allows users to manage, compare, and adjust colors, and even check printer color reproduction capabilities.

**Highlights:** Portable color measurement, Import measurement data via Bluetooth, Manage colors as reference colors, Compare colors to Color Collections, Check printer color reproduction, Adjust color measurements, Create custom Color Collections

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is uSpectrumX free?

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

### Is Epson Spectrometer free?

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

### Do uSpectrumX or Epson Spectrometer have ads?

Neither uSpectrumX nor Epson Spectrometer shows ads.

### Which is updated more often, uSpectrumX or Epson Spectrometer?

uSpectrumX ships an update every 3 months, and Epson Spectrometer every 3 months. Most recently, uSpectrumX was updated on September 16, 2026 and Epson Spectrometer on September 23, 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.*