# Kelvy - White Balance Meter — Color Temperature Light Meter > iPhone color temperature and white balance meter for photographers and filmmakers. (iPhone/iPad app by Michael Cerdeiros.) - Source: https://appshunter.io/ios/app/kelvy-white-balance-meter/id6763620060 (this page in markdown: same URL + `.md`) - Developer: [Michael Cerdeiros](https://appshunter.io/developer/1886053777) - Category: Photo & Video, Productivity - Price: Free with in-app purchases - Rating: 5.00/5 from 6 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 13 MB - Languages: American English - Released: 2026-05-04 - Data updated: 2026-08-31 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/kelvy-white-balance-meter/id6763620060/reviews.md ## What is Kelvy? 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/ ## Key features - Live Kelvin readout with real-time graph - Recommended camera white balance settings - CTO/CTB gel filter recommendations - Tint measurement for green/magenta shift - Calibration mode with gray card - Reading history with thumbnails ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly | $2.99 | per month | | Yearly | $29.99 | per year | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/kelvy-white-balance-meter/id6763620060/reviews.md ### 5/5 — You need this! *2026-05-29* On the spot, both quick to access AND accurate. Used it with my whole team to keep images in sync which helped tremendously in post. No gray card needed! ## Frequently asked questions about Kelvy ### What is Kelvy? Kelvy is a mobile application that uses your iPhone's camera to measure the color temperature of ambient light in real-time. It provides Kelvin readings, tint values, and recommended white balance settings for your camera. ### How does Kelvy help with white balance? Kelvy analyzes the light source and recommends the nearest white balance preset (e.g., Daylight, Tungsten) and the exact Kelvin value to set on your camera for accurate color reproduction. ### Can Kelvy help with mixed lighting? Yes, Kelvy offers CTO (Color Temperature Orange) and CTB (Color Temperature Blue) gel filter recommendations. This helps you match mixed lighting conditions by suggesting the correct filters to use. ### What is the calibration mode in Kelvy? The calibration mode allows you to achieve maximum accuracy by using a gray card or a white surface. This ensures that the Kelvin readings are as precise as possible for critical color work. ### How many readings can I take with the free version of Kelvy? The free version of Kelvy allows for 3 readings to try out the app's functionality. For unlimited readings, users can subscribe to Kelvy Pro. ### What are the subscription options for Kelvy Pro? Kelvy Pro is available as an auto-renewable subscription with monthly ($2.99) and yearly ($29.99) plans. You can manage your subscription through your App Store account settings. ### Does Kelvy have ads? No, Kelvy does not contain advertisements. The app offers a free tier with limited readings and a premium subscription for full access. ### On which devices can I use Kelvy? Kelvy is compatible with iPhones and iPads, running on iOS. It is designed for mobile use, making it a portable light metering tool. ## Version history (last 5 releases) ### 1.2.8 — 2026-08-25 Camera-specific white balance and tint guidance has been corrected and expanded. The iPhone Full meter layout is now more compact, camera selection is clearer during onboarding, and camera-brand identification has been improved. ### 1.2.7 — 2026-08-10 Camera-specific white balance and tint guidance has been corrected and expanded. The iPhone Full meter layout is now more compact, camera selection is clearer during onboarding, and camera-brand identification has been improved. ### 1.2.6 — 2026-07-27 Capture location details are now included with saved results. You can choose to open Kelvy directly to the Light Meter, save or discard each capture from the results screen, and enjoy faster performance with larger capture libraries. This update also refines the home animation and results experience. ### 1.2.5 — 2026-07-21 Minor bug fixes and performance improvements. ### 1.2.4 — 2026-07-20 Minor release polish and App Store listing improvements. ## More apps by Michael Cerdeiros - [Slater - Shot Logger](https://appshunter.io/ios/app/slater-shot-logger/id6760745140) - [DayMapr: ADHD Tasks & Habits](https://appshunter.io/ios/app/daymapr-adhd-tasks-and-habits/id6761452212) - [Dial: Haptic ASMR Timer](https://appshunter.io/ios/app/dial-haptic-asmr-timer/id6789739785) All apps by Michael Cerdeiros: https://appshunter.io/developer/1886053777 ## Related topics [video meter](https://appshunter.io/ios/topics/video-meter) · [color meter temperture](https://appshunter.io/ios/topics/color-meter-temperture) · [white balance meter](https://appshunter.io/ios/topics/white-balance-meter) · [cine white balance](https://appshunter.io/ios/topics/cine-white-balance) · [white balance kelvin meter](https://appshunter.io/ios/topics/white-balance-kelvin-meter) · [white balancer pro](https://appshunter.io/ios/topics/white-balancer-pro) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*