White Balance Color Temperature Kelvin Meter
A fantastic tool for professional photographers, light enthusiasts and gardeners
When we released world's first app for measuring color temperature of light more than 10 years ago, it became very popular. This is the modern version appreciated by thousands of professional photographers around the world.
Key Features
- Measures color temperature in Kelvin
- Recommends what white balance setting to use on your camera
- Continuous recommendations for color filters to match your camera flashlights with the ambient light
- Save measurements with timestamps and comments
- Very accurate results out of the box on most devices, with advanced calibration support for others
Color Meter
Color Meter stands out from the competition by its accuracy achieved through its unique utilization of a white paper reference, compensating for diverse lighting conditions. Whether you are an artist, designer, decorator, photographer or just interested in colors, Color Meter is here to assist you.
Color Meter is an innovative app that provides more accurate color measurements by utilizing a white reference to compensate for varying lighting conditions, thereby enhancing precision. Color Meter boasts a diverse user base, ranging from British algae researchers to Japanese hairdressers and Ugandan sweet potato researchers to American color print professionals. This app serves as a very cost-effective alternative to expensive professional color meters, providing predictable and reproducible results, as confirmed by numerous researchers.
Key Features
- Precise color measurement with a white paper reference for compensation in various lighting conditions
- Automatic live calibration that constantly uses the white reference to compensate for any changes in the light
- Support for a wide range of color spaces (RGB, Hex, HSL, HSI, HSB, HSP, CIE LAB, OKLAB, XYZ, YUV, CMYK, RYB and more)
- Identifies the closest RAL, Munsell and HTML standard colors to your measurements
- Compare measured colors with Delta E (ΔE 00, ΔE 94, ΔE 76)
- Save measurements with timestamps and comments, and export them to CSV files for further analysis
- Real-time continuous color measurement with intelligent warning system for optimal accuracy
- Cost-effective alternative to expensive professional color meters
LED Light Flicker Meter
Have you experienced eye strain, headache, migraine or other symptoms from exposure to flickering lights or screens?
Use this app to measure flicker levels and identify flicker-free lights and screens!
This app measures flickering of light that flicker/blink too quickly for the human eye to perceive. Despite being invisible, such flickering can cause eye strain, headaches, migraines and even epilepsy seizures. This is also a known problem for birds and chickens living indoors under artificial lights, where imperceptible flicker affects their behavior and well-being.
Use this app to measure if your LED lamps, bulbs, fluorescent tube lights and screens are flickering and how much.
The app not only measures flickering percentage, but also allows you to measure flicker frequency in Hz.
Key Features
- Measures flickering percentage (0-100%)
- Measures flicker frequency in Hz
- Detects invisible high-frequency flickering that's too fast for the human eye to perceive
- Works with LED lamps, bulbs, fluorescent tube lights, and all types of screens (computer monitors, TVs, smartphones, tablets)
- Real-time continuous measurement for instant results
- Simple point-and-measure operation
- Accuracy within ±5 percentage points under normal conditions
Light Spectrometer - Dominant Wavelength Meter
Measure the dominant wavelength of colored light sources with your smartphone - perfect for education, LED testing, and research
Transform your phone into a light spectrometer that measures dominant wavelength (nm), frequency (THz), and period (fs) of colored light. Point your camera at a white surface illuminated by your target light, and get instant nanometer-precise readings. An affordable alternative to expensive equipment, trusted by educators and light enthusiasts worldwide.
Key Features
- Multiple measurement units - wavelength (nanometers), frequency (terahertz), and period (femtoseconds)
- Real-time measurements with live camera preview for instant results
- Smart limitations warning - automatic alerts for UV and IR ranges where smartphone cameras have natural limitations
- Optional device calibration for enhanced precision when maximum accuracy is needed
- Global language support with 40 different languages built-in
Screen Brightness Nits Meter
Measure the brightness of any screen, monitor, TV, or display using your smartphone camera
Turn your smartphone into a convenient and easy-to-use Nits Meter. Perfect for enthusiasts, professionals and anyone who needs quick screen brightness measurements.
Key Features
- Real-time luminance measurements in nits (cd/m²)
- Pre-calibrated for reliable readings
- Built-in calibration feature for optimal accuracy on your device
- Multiple measurement units: Nits, Foot-Lambert, Stilb, Lambert, Apostilb, cd/ft²
- Save measurements with notes for easy reference
- Detailed documentation and help
- Customizable settings
- Works with LCD, OLED, LED, HDR, QLED and AMOLED displays
- Simple point-and-measure operation
Lux Meter - Light Exposure Calculator
Achieve perfect exposure every time with professional-grade accuracy and intuitive design. Trusted by photographers, filmmakers, plant enthusiasts, and lighting professionals worldwide
Easily measure light intensity in any environment with either the light sensor (incident measurement, only on Android) or the back or front camera (reflective measurement / spot metering). The app also has an easy to use full-time manual override exposure meter to quickly find what combinations of Aperture, Speed and ISO that would create a normal exposure.
While not needed on most devices, the app also features an advanced calibration for optimal results on all devices.
Key Features
- Interactive Exposure Calculator - Get instant, optimal camera settings with real-time adjustments for aperture, shutter speed, ISO, exposure compensation, and filters
- Adjustable Step Sizes - Choose between full stops, half stops, and third stops individually for each parameter
- Shutter Angle for Video & Film - Set frame rate and shutter angle, or use the standard 180° rule for natural motion blur
- Professional Accuracy - Pre-calibrated to match three professional light meters, with optional device-specific calibration
- Dual Measurement Modes - Incident measurement using device light sensor (Android) and reflective measurement with rear/front cameras
- Superior Low-Light Performance - Excels in very low light conditions, measures below 1 lux, 0.1 fc, and nearly down to -2 EV
- Comprehensive Filter Support - ND filters, color filters, IR filters, CPL/PL polarizing filters, and custom filters
- Multiple Measurement Units - Measure in Lux (lx), Foot-Candles (fc), and Exposure Value (EV)
- Save Measurements - Store unlimited readings with timestamps, custom notes, and complete camera settings
- Versatile Applications - Beyond photography and filmmaking, used for horticulture, aquariums, terrariums, art galleries, museums, offices, and workspaces
- All Light Source Types - Accurately measures LEDs, incandescent, fluorescent, halogen, sunlight, laser diodes, OLEDs, and any artificial or ambient lighting
Wide Language Support
Now all our apps are supporting 40 different languages of the world.
"I use spectrometers and Kelvinmeters professionally and those pro tools are extremely expensive. Given how extremely close these apps are to the ridiculously expensive pro tools, I think they're really worth it"
PhD Philippe Coulon, Neurobiologist researcher, University of Freiburg, Germany
User-Friendly Interfaces
We believe that technology should be accessible to everyone. Our apps are designed with intuitive and user-friendly interfaces, ensuring a seamless experience for all users, regardless of technical expertise
Real-Time Results
Say goodbye to guesswork! All our apps provide real-time measurements, allowing you to make instant adjustments and decisions based on accurate data
Unrivaled Accuracy
We take pride in the unparalleled accuracy of our measurements. Despite the limitations of regular smartphones our goal is that you shall be able to trust our apps to deliver precise and reliable results every time
Constant Innovation
We are committed to staying ahead of the curve and continuously enhancing our apps based on your needs and your requests
Global Reach
Our apps have made their mark across the globe, empowering you from all corners of the world to harness the power of light and color measurement using regular smartphones.
Feedback Welcome
These apps are designed for You. Your input is always welcome, and we respond to every user who contacts us. No question is too trivial and no idea is too bold.
What feature are you missing? How could we improve? What is the next app you would like to see? Please feel free to reach out to us at
[email protected]
Trusted in Education
These apps are widely used in education - universities and schools worldwide have made institutional purchases of more than 10 000 units in countries including Japan, Germany and the UK.