Spot Light Meter
A Real Light Meter for iPhone
Live EV, lux, and foot-candle readings, plus an exposure-triangle solver. A handheld light meter, right on your iPhone.
- Pricing
- Free · One-time Pro unlock
- Available on
- App Store
- Version
- 1.1.0 · 11 November 2026
Screenshots (05)
Features
(08)- 01
Live EV, Lux & Foot-Candle Readout
Point your camera at a scene for an instant numeric exposure reading, not just a suggestion.
- 02
Full Exposure-Triangle Solver
Set your ISO. In Program, Spot Light Meter picks aperture and shutter speed; in Shutter-Priority or Aperture-Priority it solves the other one; in Manual it shows how far your settings are from the reading. Program is free; Shutter-Priority, Aperture-Priority and Manual come with Pro.
- 03
Tap-to-Focus Spot Metering
Tap anywhere in the frame to meter that exact spot instead of relying on one averaged scene reading.
- 04
Calibration Offset
Dial in −3 to +3 stops in 0.1-stop increments to shift the lux or foot-candle reading and the Manual mode meter, for example to match a reference meter you trust.
- 05
Live Histogram
Check your exposure balance at a glance, part of the one-time Pro unlock.
- 06
Custom Focus Reticles
Square, circle, vertical, or horizontal focus reticles to match how you frame a shot. The square is free; the others come with Pro.
- 07
Precision Pinch-to-Zoom
Zoom in tight on small or distant light sources to aim your spot reading precisely.
- 08
One Clean Pro Unlock
A single one-time purchase unlocks full manual control, the histogram, extra reticles, and precision zoom. No subscription, ever.
Questions
(05)What does Spot Light Meter measure?
It gives a live reading of exposure value (EV), lux and foot-candles from your iPhone camera, with tap-to-meter spot metering and pinch-to-zoom for small or distant light sources.
Does it calculate camera settings?
Yes. Set your ISO: in Program it picks aperture and shutter speed, in Shutter-Priority or Aperture-Priority it solves the other one, and in Manual it shows how far your settings are from the reading.
Can I calibrate it?
Yes. Set an offset from −3 to +3 stops in 0.1-stop steps. It shifts the lux or foot-candle reading and the Manual mode meter, for example to match a reference meter you trust.
Is Spot Light Meter a subscription?
No. It's free to download, and a single one-time purchase unlocks the Pro features: full manual control, the live histogram, extra reticles and precision zoom.
Does it record or store the camera image?
No. The camera is used only to read the light in the scene. See our Privacy Policy for details.
