Kelvy - White Balance Meter

Kelvy turns your iPhone or iPad into a practical white balance assistant for location scouting, lighting setups, photography, and filmmaking. Aim the camera at a neutral white or gray reference under the light you want to measure to estimate its color temperature and tint, then see settings tailored to your selected camera.

WHAT KELVY SHOWS

Kelvy analyzes the live camera image and displays:

- Estimated Kelvin color temperature

- Green/magenta tint shift

- Likely light-source category

- Camera-specific white balance and tint settings

- CTO/CTB gel suggestions for balancing mixed lighting

CAMERA-SPECIFIC GUIDANCE

Choose a profile for ARRI, Blackmagic, Canon, DJI, Fujifilm, GoPro, Nikon, OM System, Panasonic, RED, Sony, or use the Generic profile. Kelvy translates each reading into the closest Kelvin and tint steps supported by that camera.

KEY FEATURES

- Live Kelvin and tint readout with a real-time color temperature graph

- Compact Full meter layout on iPhone

- Camera-specific white balance and tint recommendations

- Likely source and CTO/CTB gel suggestions

- Offset control for matching Kelvy to a trusted meter or camera body

- Tap to copy Kelvin values

- Branded photo exports with reading overlays

- Saved reading history with thumbnails and location details

- Choose to open Kelvy directly to the Light Meter

Kelvy is free to use with 5 captures each week. Kelvy Pro unlocks unlimited captures.

SUBSCRIPTION INFO

Kelvy Pro is available as an auto-renewable subscription. Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can manage and cancel your subscription in your App Store account settings.

Measurements are camera-based estimates and can vary by device, reference surface, exposure, and mixed lighting. For critical color work, compare with a calibrated meter.

Privacy Policy: https://mikecerdeiros.github.io/kelvy-privacy/

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/