Not good for LED bulbs?
Seems accurate compared to other apps, but the reading will jump around (from 2800 to 5800, for instance), and give a low-confidence warning. “Avoid clipping, mixed light, or odd-spectrum LEDs”
Free
In-App Purchases
About
This app measures real-time color temperature using your device's camera white balance sensor, eliminating the need for gray cards. It offers features like a gel calculator, color history logging, and white balance lock for accurate light source matching.
✓Real-time color temperature measurement
✓Uses camera white balance sensor
✓Gel calculator for CTO/CTB
✓Color history logging
✓White balance lock
✓Accurate light source matching
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What's New in Kelvin
1.1.0
October 31, 2026
Smoother free trial and upgrade experience, a daily allowance of live metering for free users, and a polished paywall. Under-the-hood updates for better stability
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Subscriptions & In-App Purchases
Kelvin Meter Pro
Gels, color history & white balance lock
$12.991 Year
7 Days trialUser reviews
Developer apps
FAQ
How does Kelvin measure color temperature?
Kelvin reads your camera's white balance sensor to measure color temperature in real time, providing CCT readings from 2000K to 10000K. It does not sample pixels from a photo.
What are the Pro features in Kelvin?
Kelvin Pro offers a Gel Calculator to find CTO/CTB gels, Color History to log and compare readings, and White Balance Lock to freeze the sensor for consistent measurements.
Is Kelvin available on Android?
Based on the provided data, Kelvin is currently supported on iPhone and iPod devices.
What is the price of Kelvin Meter Pro?
Kelvin Meter Pro is available for $12.99 per year and includes a 7-day free trial.
Does Kelvin have ads?
No, the application does not contain advertisements.
How often is Kelvin updated?
The application was last updated on July 14, 2026, with version 1.0. Further update frequency is not specified.
What is the age rating for Kelvin?
Kelvin has an age rating of 4+, making it suitable for a wide range of users.
What is the user sentiment for Kelvin?
Kelvin has a rating of 3.0 stars from 1 rating, indicating a mixed initial reception.
