# Blue Light Spectrum Analyzer — Measure Your Environment!

> Analyze environmental blue light spectrum from photos to influence sleep and wakefulness. (iPhone/iPad app by Alexander Stone.)

- Source: https://appshunter.io/ios/app/blue-light-spectrum-analyzer/id1255755518 (this page in markdown: same URL + `.md`)
- Developer: [Alexander Stone](https://appshunter.io/developer/473531912)
- Category: Photo & Video, Utilities
- Price: $0.99
- Rating: 1.75/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 11.0 · 10 MB
- Languages: English
- Released: 2017-07-05
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/blue-light-spectrum-analyzer/id1255755518/reviews.md

## What is Blue Light Spectrum Analyzer?

Having trouble with motivation or sleep? You are not alone! Use the blue light spectrum analyzer to check your environment and find sources of blue light - a powerful motivator and wakefulness agent. 

Want to wind down and sleep? Eliminate sources of blue light and use filters to signal your body it is bedtime.

HOW TO USE
Take photos of your bedroom, bathroom and your work station. 
Analyze the photos with the Blue Light Spectrum Analyzer app
Orange and gray are sleep inducing
Blue and bright saturated colors are wakefulness promoting


CONTROL YOUR EXPOSURE
Taking simple steps, like changing the light bulbs in your bedroom and bathroom to use softer color temperature (less than 3000K) can mean a lot for how quickly you fall asleep. Installing dimmers or using backup light sources at night is another thing you can try to make it easier to fall asleep. Reducing night time screen use or wearing light-filtering glasses can help with falling asleep faster.

NANOMETERS MATTER!
Your eyes contain super-sensitive photo pigment called Melanopsin. When activated by blue light in the 420-480 nanometer spectrum range, it sends a powerful signal directly into the sleep-wake control center of your brain. When Blue Light is detected, your brain suppresses production of Melatonin, an important hormone that promotes sleep and wellbeing. 

Naturally there are no sources of blue light at night. Our eyes are adjusted to stars, moon and wood fire. We can tolerate some amounts of orange light at night, but not light from daylight-spectrum lightbulbs. These shock our system and disrupt sleep. 


MEANINGFUL IMAGERY
We are attracted to meaningful light sources. A flat panel of blue is unnatural and does not activate our brain in the same way as looking out the window at the sky. Use the spectrum analyzer app to see how much light comes through your windows, photo-frames or other light sources.

RELATIVE MEASUREMENT
I’ve put a lot of work into making sure the app provides measurements which are useful for an average person. Take a look at the photo and be able to visually confirm colors present to match the spectrum analysis.  As such, the color space used by the app is not photographically correct. First, there are no true black or white, the spectrum is cut off at 630nanometers (everything from 630-700 appears as red). I’m coloring the bars with an average brightness of light at that wavelength. As such, very subtle saturations of different wavelengths appear as gray.

## Key features

- Analyze environmental blue light
- Identify sleep-inducing colors
- Identify wakefulness-promoting colors
- Control blue light exposure
- Understand light's impact on sleep
- Photo analysis of light sources

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/blue-light-spectrum-analyzer/id1255755518/reviews.md

### 3/5 — ACCIDENTALLY PURCHASED

*2021-05-06, version 1.1*

Hello, 
I was scrolling through and accidentally clicked on the app and bought it. I was wondering if I could get a refund?

## Frequently asked questions about Blue Light Spectrum Analyzer

### What is the Blue Light Spectrum Analyzer used for?

The Blue Light Spectrum Analyzer helps you identify sources of blue light in your environment. By analyzing photos of your surroundings, it can indicate colors that promote wakefulness or induce sleep, allowing you to adjust your lighting for better rest or focus.

### How does the Blue Light Spectrum Analyzer work?

The app analyzes photos you take of your environment. It identifies the presence and intensity of different light wavelengths, specifically focusing on the blue light spectrum (420-480 nanometers). This analysis helps you understand how your lighting might be affecting your body's natural sleep-wake cycle.

### What does the app mean by 'sleep-inducing' and 'wakefulness-promoting' colors?

The app categorizes colors based on their impact on your body's circadian rhythm. Blue and bright saturated colors are identified as wakefulness-promoting, while orange and gray tones are considered sleep-inducing. This helps you make informed decisions about your lighting.

### Can the Blue Light Spectrum Analyzer help me sleep better?

Yes, by identifying and helping you reduce sources of blue light in your bedroom and bathroom, especially in the evening, the app can signal your body that it's time to wind down. This can lead to falling asleep faster and improving overall sleep quality.

### What is the price of the Blue Light Spectrum Analyzer?

The Blue Light Spectrum Analyzer is available for a one-time purchase of $0.99.

### On which devices can I use the Blue Light Spectrum Analyzer?

The Blue Light Spectrum Analyzer is compatible with iPhone and iPod devices.

### How often is the Blue Light Spectrum Analyzer updated?

The app was last updated on October 11, 2017, with version 1.1. Future updates will depend on the developer's ongoing support and development plans.

### What is the age rating for the Blue Light Spectrum Analyzer?

The Blue Light Spectrum Analyzer has an age rating of 12+, indicating it is suitable for users aged 12 and older.

## Version history (last 2 releases)

### 1.1 — 2017-10-11

This app has been updated by Apple to display the Apple Watch app icon.

Faster environment analysis!
Fixed a crash with iOS11 selecting photos

### 1.0 — 2017-07-05

No release notes.

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## More apps by Alexander Stone

- [Glamour Cam - Augmented Reality App](https://appshunter.io/ios/app/glamour-cam-augmented-reality-app/id497623306)
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- [Game4Cats a Bird Hunting Game for Cats](https://appshunter.io/ios/app/game4cats-a-bird-hunting-game-for-cats/id741559062)
- [Plant Health Tracker App](https://appshunter.io/ios/app/plant-health-tracker-app/id1393815698)
- [Heart Chart for Office Workers](https://appshunter.io/ios/app/heart-chart-for-office-workers/id1443194885)

All apps by Alexander Stone: https://appshunter.io/developer/473531912

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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 2026-06-10.*