# OSpectrometer — Optical Spectrometer

> Mobile optical spectrometer using camera and screen for visible light analysis. (iPhone/iPad app by NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI.)

- Source: https://appshunter.io/ios/app/ospectrometer/id6446124449 (this page in markdown: same URL + `.md`)
- Developer: [NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI](https://appshunter.io/developer/1674573382)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 2.00/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 71 MB
- Languages: American English
- Released: 2023-03-18
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/ospectrometer/id6446124449/reviews.md

## What is OSpectrometer?

Optical spectroscopy in the visible light spectrum is a commonly used tool in different fields such as health, manufacturing, art, and forensic research.
OSpectrometer implements basic spectrometer functions using the built-in camera and screen without requiring external devices or programs.
- Visible light spectrum is transformed and mapped to a function that generates RGB (Red Green Blue) color values
- A specific light wavelength can be selected and used to illuminate a desired target (i.e., close to the screen)
- The whole spectrum or a specific part of the spectrum can be selected and scanned
- Front camera is used to sense the reflection from the target object
- Consistent and repeatable reflection/absorption amplitude with respect to the color spectrum
- The result can be saved and shared
- Works offline, no need to connect to any network or internet



Privacy-policy: https://software.nanorescenter.com/osprectrometer-privacy-policy
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| year | $9.99 | per year |
| month | $2.99 | per month |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/ospectrometer/id6446124449/reviews.md

### 1/5 — Dishonest and liar.

*2024-06-07*

When apps advertise themselves as free with in-app purchases, it typically means that you can use the basic features without needing to pay or subscribe. However, this particular app is fully paid and you won't be able to use it without making a payment. So this is Fraud based on false claims.

### 1/5 — Subscription REQUIRED

*2023-06-20*

Bait and switch.  Must sign up AND agree to pay. DELETED FOR DISHONESTY

## Frequently asked questions about OSpectrometer

### What is OSpectrometer?

OSpectrometer is a mobile application that uses your device's camera and screen to perform basic optical spectroscopy. It analyzes the visible light spectrum of objects without requiring external hardware.

### Does OSpectrometer work offline?

Yes, OSpectrometer works offline. You do not need to connect to any network or the internet to use its features.

### What devices does OSpectrometer support?

OSpectrometer is supported on iPhone, iPad, and iPod devices.

### What is the age rating for OSpectrometer?

OSpectrometer has an age rating of 4+.

### How often is OSpectrometer updated?

The latest version of OSpectrometer is 1.3, last updated on April 4, 2023. Updates typically occur to improve functionality and address any issues.

### What are the subscription plans for OSpectrometer?

OSpectrometer offers monthly subscriptions at $2.99/month with a 3-day free trial, and yearly subscriptions at $9.99/year with a 3-day free trial.

### What is the user sentiment for OSpectrometer?

OSpectrometer has a rating of 2.0 stars from 4 ratings, indicating a mixed to negative user sentiment based on the available data.

### Can I share the results from OSpectrometer?

Yes, the results obtained from OSpectrometer can be saved and shared with others.

## Version history (last 4 releases)

### 2.1 — 2026-05-12

Spectrum Calibration
Improve measurement accuracy with the new calibration feature. Place any white reflective surface in front of the camera, tap "Calibrate," and run a single reference scan. All future scans are automatically normalized against this baseline, removing brightness variations caused by the light source across different wavelengths. This results in cleaner, more consistent spectrum readings where intensity differences reflect actual material properties rather than LED output characteristics.

• One-tap calibration with on-screen guidance
• Calibration persists between sessions
• Recalibrate or clear anytime
• Visual indicator shows calibration status

### 2.0 — 2026-05-11

• Faster scanning — Switched to continuous video capture for smoother, higher-resolution spectral measurements.
• Color shift analysis — New "Shift" mode plots the reflected wavelength from the camera, enabling diffuse reflectance spectroscopy (e.g., detecting hemoglobin absorption through a fingertip).
• Scan mode selector — Choose between Spectrum, Shift, or Both views with the new toggle below the plot.
• Improved plot resolution — Baseline moved to use 90% of the vertical axis for better visibility of spectral features.
• Analytical color rendering — Replaced lookup table with a smooth wavelength-to-RGB conversion for more accurate spectral colors.
• Performance improvements — Persistent rendering context, narrower camera sampling region, and reduced audio feedback for a cleaner scanning experience.

### 1.3 — 2023-04-04

-Subscriptions are now possible

### 1.0 — 2023-03-18

No release notes.

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## Related topics

[photonics spectra](https://appshunter.io/ios/topics/photonics-spectra) · [light wavelength](https://appshunter.io/ios/topics/light-wavelength)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*