# OSpectrometer vs flameeye

The clearest difference is rating: flameeye at 5.0 against OSpectrometer's 2.0. flameeye also leads on in-app purchases (none vs 2) and review sentiment (33% vs 0%). OSpectrometer's advantage is ratings volume (4 vs 1). On price, update cadence, 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. flameeye asks for nothing beyond the download.

flameeye holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 0% of OSpectrometer's written reviews are positive against 33% of flameeye's.

OSpectrometer ships an update every 2 weeks, flameeye every 3 weeks. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | OSpectrometer | flameeye |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/ospectrometer/id6446124449/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flameeye/id6475804749/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 71 MB | 38 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI](https://appshunter.io/developer/1674573382) | [盗火者光电(杭州)有限公司](https://appshunter.io/developer/1725248359) |

## What reviewers say

### 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 |


### flameeye

[App page](https://appshunter.io/ios/app/flameeye/id6475804749)

This app offers advanced spectral analysis for substance detection within the 340-1070nm range. It provides scientific services in diverse environments where traditional spectrometers are impractical, with continuously updated modules via cloud services.

**Highlights:** Spectral analysis 340-1070nm, Substance detection, Cloud-based module updates, Portable scientific services, Works in diverse conditions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OSpectrometer free?

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

### Is flameeye free?

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

### Which has better reviews, OSpectrometer or flameeye?

flameeye is rated higher. OSpectrometer averages 2.0 out of 5 from 4 ratings, while flameeye averages 5.0 from 1 ratings.

### Do OSpectrometer or flameeye have ads?

Neither OSpectrometer nor flameeye shows ads.

### Which is updated more often, OSpectrometer or flameeye?

OSpectrometer ships an update every 2 weeks, and flameeye every 3 weeks. Most recently, OSpectrometer was updated on September 10, 2026 and flameeye on June 1, 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.*