# LightTemp – Color Meter

> Color temperature & scopes

Canonical page: [https://chrome-stats.com/d/id6779562510](https://chrome-stats.com/d/id6779562510)

## Overview

- **ID:** `id6779562510`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** DOMINIC WALSER
- **Category:** Photo & Video
- **Version:** 1.0
- **Last updated:** 2026-06-19
- **First published:** 2026-06-19
- **Size:** 1.17 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/lighttemp-color-meter/id6779562510)
- **Website:** [http://www.lighttemp.app](http://www.lighttemp.app/)
- **Privacy policy:** [https://lighttemp.app/privacy.html](https://lighttemp.app/privacy.html)

## Description

Turn your iPhone into an on-set color meter: real-time Kelvin, tint, false color, waveform, RGB parade, lighting ratio and gel matching. Built by a filmmaker.

LightTemp turns your smartphone into a professional on-set tool: measure light, understand it, and keep it consistent across the whole shoot – no expensive hardware required.
Built by a filmmaker, for filmmakers.

◆ REAL-TIME KELVIN & TINT
Point your camera at a light source and instantly read color temperature (Kelvin) and green-magenta tint. Tap the image to measure that exact spot (double-tap = center). Perfect for scouting and quick lighting checks.

◆ CAMERA WB RECOMMENDATION
LightTemp tells you exactly what to dial into your camera – the measured value IS your white balance.

◆ LIGHTING RATIO (LIGHTING DESIGN)
Measure Key, Fill, Back and Background one by one – the app computes the contrast ratios in stops (e.g. 4:1). Turn "reading a number" into "designing your lighting".

◆ GEL CALCULATOR
Pick source + target white point – the app calculates the right CTO/CTB gel using real mired math, including combining large corrections.

◆ SHOOT SETUP & SHOT MATCH (CONTINUITY)
Set your cine camera once (model, EI, fps, shutter angle). Save each scene as a full snapshot – Kelvin, tint, lighting ratio, flicker note and your camera values – and reproduce the lighting exactly on the next shooting day. Export as PDF.

◆ CONTINUITY RADAR
Anchor the current light and the app warns you – with a banner and haptic – the moment color temperature or tint drifts, with a correction tip to get back. Keeps your look consistent across takes.

◆ MULTI-POINT DEVICE CALIBRATION
Calibrate LightTemp with several reference points into a precise correction curve – maximum accuracy on your exact device.

◆ AUTOMATIC LIGHT SOURCE DETECTION
Recognizes Tungsten, LED, HMI, daylight, candlelight or fluorescent – including a flicker warning (banding risk).

◆ PRO SCOPES
• Histogram – brightness distribution
• Waveform – luminance across the image width
• RGB Parade – red/green/blue separately for a quick white-balance check

◆ FALSE COLOR & ZEBRA
Exposure overlays like on professional monitors – correct skin tones, clipping and overexposed areas at a glance. Plus a live exposure assistant.

◆ GOLDEN & BLUE HOUR
Calculates the sun's position from your location with a countdown to the next phase – for scouting.

◆ MORE TOOLS
• Live camera data: ISO, shutter, aperture, FPS
• Pinch-to-zoom • Freeze to lock the value
• Customizable tool bar
• Kelvin alarm (vibrates at target value)
• Four languages: English, German, French, Spanish

PRIVACY
All data stays on your device. No accounts, no tracking, no ads.
Note: Accuracy depends on your device's camera; use the calibration for best results. LightTemp is an assistive tool and does not replace a calibrated hardware light meter for the most demanding use.

## Rankings

- #1,664,297 — Overall

## Similar extensions and apps

- [Luma : AI White Balance Meter](https://chrome-stats.com/d/id6759115349) — 5.00 / 5
- [Color Temperature Meter+](https://chrome-stats.com/d/id6760257870) — 4.20 / 5
- [KelvinCam: Light Meter](https://chrome-stats.com/d/id6772284884) — 5.00 / 5
- [CineTemp](https://chrome-stats.com/d/id6738967033) — 4.90 / 5
- [Kelvy – White Balance Meter](https://chrome-stats.com/d/id6763620060) — 5.00 / 5
- [White Balance & Kelvin Meter](https://chrome-stats.com/d/id6761112799) — 3.50 / 5
- [kelvin light scale](https://chrome-stats.com/d/id6761167793)
- [CineMeter Pro: Color Meter](https://chrome-stats.com/d/id6766497271) — 5.00 / 5
- [LightMeter - Pro Light Meter](https://chrome-stats.com/d/id6792602957)
- [PhoMeter](https://chrome-stats.com/d/id6766316130)
- [LightMeter Express](https://chrome-stats.com/d/id6748661409) — 4.70 / 5
- [Light Meter - Lux & EV Gauge](https://chrome-stats.com/d/id6761284559)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6779562510)