Colorimeter App vs OSpectrometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Colorimeter App
Capture and analyze colors from your camera or photos. Get detailed information, convert between various color formats, and access extensive color lists. Includes tools for color mixing, difference calculation, and even color blindness tests.
- Pick color from camera
- Pick color from photos
- Color conversion
- Color mixer
- Color difference calculation
- CSS and RAL color lists
- Color blindness tests
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The application allows to decompose a color into components from selected picture or using camera. Features: - Picking color from the camera - Picking color from the photos - Converter - Picker - Mixer - Color Difference - CSS Colors List - RAL Classic Colors List - Tests for color blindness - Save and Edit the picked color Color conversions are possible in formats: RGB, RGB%, RGB 0-1, HEX, CMY, CMYK, XYZ, HSB/HSV, HSL, LAB, WEBSAFE, RYB, YUV. Localization supported: Afrikaans, Arabic, Bangla, Czech, Danish, German, Greek, English, Spanish, Finnish, Filipino, French, Gujarati, Hebrew, Hindi, Croatian, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malayalam, Marathi, Malay, Dutch, Punjabi, Polish, Portuguese, Russian, Slovak, Swedish, Tamil, Telugu, Thai, Tagalog, Turkish, Ukrainian, Vietnamese, Chinese (China Mainland), Chinese (Taiwan). Attention: the color names are used only as illustration of similar color, do not use the color names in situations that may be associated with risk to life and health. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
OSpectrometer
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.
- Visible light spectrum analysis
- RGB color value mapping
- Wavelength selection and scanning
- Front camera reflection sensing
- Save and share results
- Offline functionality
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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/
Screenshots
Verdict
The clearest difference is review sentiment: Colorimeter App at 64% against OSpectrometer's 0%. Colorimeter App also leads on rating (4.7 vs 2.0) and ratings volume (137 vs 4). OSpectrometer's advantage is ads (none vs shown). On price, update cadence, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Colorimeter App sells 2 in-app purchases, starting at $0.49 per month and OSpectrometer sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Colorimeter App holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Colorimeter App has 137 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 64% of Colorimeter App's written reviews are positive against 0% of OSpectrometer's.
Colorimeter App ships an update every 3 weeks, OSpectrometer every 2 weeks. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.
| Parameter | Colorimeter App | OSpectrometer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (137 ratings) — better | 2.0 (4 ratings) |
| Positive reviews | 64.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 137 — better | 4 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 37 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | Serhii Smyk | NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI |
Customer experience
Colorimeter App
OSpectrometer
In-app purchases
Colorimeter App
- Premium for 1 month$0.491 Month
- Premium for 1 year$1.991 Year
OSpectrometer
- month3 Days trial$2.991 Month
- year3 Days trial$9.991 Year
Questions
Is Colorimeter App free?
Is OSpectrometer free?
Which has better reviews, Colorimeter App or OSpectrometer?
Do Colorimeter App or OSpectrometer have ads?
Which is updated more often, Colorimeter App or OSpectrometer?
Other comparisons
