# Epson Spectrometer vs OSpectrometer

The clearest difference is rating: Epson Spectrometer at 5.0 against OSpectrometer's 2.0. Epson Spectrometer also leads on in-app purchases (none vs 2). OSpectrometer's advantage is update cadence (every 2 weeks vs every 3 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. OSpectrometer sells 2 in-app purchases, starting at $2.99 per month. Epson Spectrometer asks for nothing beyond the download.

Epson Spectrometer holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

Epson Spectrometer ships an update every 3 months, OSpectrometer every 2 weeks. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Epson Spectrometer | OSpectrometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/epson-spectrometer/id1558626654/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/ospectrometer/id6446124449/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 57 MB | 71 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seiko Epson Corporation](https://appshunter.io/developer/326876195) | [NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI](https://appshunter.io/developer/1674573382) |

## What reviewers say

### 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


### OSpectrometer

[App page](https://appshunter.io/ios/app/ospectrometer/id6446124449)

This app uses your device's camera and screen to perform basic optical spectroscopy. Analyze the visible light spectrum of objects, map light wavelengths to RGB values, and save or share your findings. It functions offline without external hardware.

**Highlights:** Visible light spectrum analysis, RGB color value mapping, Wavelength selection and scanning, Front camera reflection sensing, Save and share results, Offline functionality

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| month | $2.99 | per month |
| year | $9.99 | per year |


## Frequently asked questions

### Is Epson Spectrometer free?

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

### Is OSpectrometer free?

OSpectrometer is free to download, with in-app purchases available.

### Which has better reviews, Epson Spectrometer or OSpectrometer?

Epson Spectrometer is rated higher. Epson Spectrometer averages 5.0 out of 5 from 4 ratings, while OSpectrometer averages 2.0 from 4 ratings.

### Do Epson Spectrometer or OSpectrometer have ads?

Neither Epson Spectrometer nor OSpectrometer shows ads.

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

Epson Spectrometer ships an update every 3 months, and OSpectrometer every 2 weeks. Most recently, Epson Spectrometer was updated on September 23, 2026 and OSpectrometer on September 10, 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.*