By HighApps · Android & iOS
Light Meter is a photography aid for lux, EV, ISO, shutter, and aperture on Android and iPhone. Incident measures the light falling on the subject. Reflection measures light bouncing off the scene. No account. No ads.
How it works
Set the ISO you will use on the taking camera, then measure. The app solves shutter or aperture from the light it sees. Readings vary by phone — it is not a lab meter.
Measures light falling on the subject. On Android that is the ambient light sensor when the phone has one. On iPhone there is no public ambient-light API, so the app estimates from short stills on the front camera — aim at the subject or a gray card, not into the sun.
Point the rear camera at what you will photograph and tap measure. The app reads ISO, shutter, and aperture from that still (EXIF), then shows lux and EV. Use this when you cannot stand in the subject’s light.
Copy reading puts the last exposure on the clipboard. Share sends a short message with a link to the Play listing on Android or the App Store listing on iPhone. Feedback opens mail to HighApps.
What’s in the app
Metering math runs on the device. Internet is used for crash reports, analytics, and this page.
See illuminance and exposure value after a measure. Incident and Reflection both show the pair.
Pick stops in full, half, or third steps. Tv-first or Fv-first priority matches how you shoot.
Calibrate Incident in thirds of a stop when this phone reads brighter or darker than a meter you trust.
Add glass stops on top of compensation when the taking lens has an ND on it.
One tap puts the last exposure on the clipboard. Nothing is uploaded to HighApps.
No AdMob, no advertising ID, no tracking prompt. Firebase Analytics and Crashlytics only.
Be straight about it
Phone sensors and cameras differ. Angle, cover glass, and how still you hold the phone all move the number. Use exposure compensation if you need this device to match a meter you already trust.
Do not use Light Meter for legal, regulatory, scientific, or professional certification. For official exposure, use a calibrated meter.
Android and iPhone · listed on Google Play and the App Store as Light Meter Pro.
Privacy & studio
Camera stills and light-sensor samples are processed on the phone. Successful measures may send lux, EV, and stop values to Firebase Analytics. The full policy lists every category.
Read the privacy policyLight Meter is published by HighApps. See the rest of the catalog, including Tint Meter and other tools, on the studio site.
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