# ColorMeter vs Light Spectrometer Wavelength

The clearest difference is rating: Light Spectrometer Wavelength at 4.2 against ColorMeter's 1.7. Light Spectrometer Wavelength also leads on review sentiment (72% vs 42%) and ratings volume (92 vs 7). ColorMeter's advantage is in-app purchases (none vs 7) and iOS requirement (11.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Light Spectrometer Wavelength sells 4 in-app purchases, starting at $0.99 per month. ColorMeter asks for nothing beyond the download.

Light Spectrometer Wavelength holds the better App Store score, 4.2 against 1.7. That said, the two scores are not equally well evidenced: Light Spectrometer Wavelength has 92 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 42% of ColorMeter's written reviews are positive against 72% of Light Spectrometer Wavelength's.

ColorMeter ships an update every 5 weeks, Light Spectrometer Wavelength every 2 months. The most recent releases landed on August 17, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | ColorMeter | Light Spectrometer Wavelength |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (7 ratings)](https://appshunter.io/ios/app/colormeter/id1502363418/reviews) | **[4.2 (92 ratings)](https://appshunter.io/ios/app/light-spectrometer-wavelength/id6450930820/reviews)** |
| Number of ratings | 7 | **92** |
| Positive reviews | 41.7% of reviews | **71.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 111 MB | 43 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [坤 杨](https://appshunter.io/developer/1590949449) | [Contechity AB](https://appshunter.io/developer/1649290454) |

## What reviewers say

### ColorMeter

[App page](https://appshunter.io/ios/app/colormeter/id1502363418)

Connects to a colorimeter via Bluetooth to capture and analyze color data. It measures various color parameters, compares colors using different formulas, and allows for storage and retrieval of color data.

**Highlights:** Bluetooth colorimeter connection, Color data capture and analysis, Multiple color parameter measurements, Color comparison with various formulas, Color data storage and database, Color lookup and matching

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Light Spectrometer Wavelength

[App page](https://appshunter.io/ios/app/light-spectrometer-wavelength/id6450930820)

This application analyzes light to determine its dominant wavelength in nanometers, frequency in terahertz, and period length in femtoseconds. It provides real-time measurements and allows users to save their findings with notes. The app is designed for measuring colored light sources.

**Highlights:** Measures dominant wavelength (nm), Measures frequency (THz), Measures period length (fs), Real-time measurement, Save measurements with notes, Optional calibration

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $0.99 | per month |
| Full access | $0.99 | per month |
| Full access | $4.99 | per year |
| Full access | $6.99 | one-time |


## Frequently asked questions

### Is ColorMeter free?

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

### Is Light Spectrometer Wavelength free?

Light Spectrometer Wavelength is free to download, with in-app purchases available.

### Which has better reviews, ColorMeter or Light Spectrometer Wavelength?

Light Spectrometer Wavelength is rated higher. ColorMeter averages 1.7 out of 5 from 7 ratings, while Light Spectrometer Wavelength averages 4.2 from 92 ratings.

### Do ColorMeter or Light Spectrometer Wavelength have ads?

Neither ColorMeter nor Light Spectrometer Wavelength shows ads.

### Which is updated more often, ColorMeter or Light Spectrometer Wavelength?

ColorMeter ships an update every 5 weeks, and Light Spectrometer Wavelength every 2 months. Most recently, ColorMeter was updated on August 17, 2026 and Light Spectrometer Wavelength on September 22, 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.*