Lightmeter Pro is an app that simulates a digital meter. This app allows you to check the exposure settings of the analogue and digital cameras to get the best exposure of the picture taken.
the lightmeter Pro settings allow you to set the method for calculating the exposure in manual mode (MANUAL), where you can manually set the time values ​​(T) (shutter speed) and the (F) (Aperture) according to the ISO sensitivity value.
Mode (APERTURE), "APERTURE PRIORITY" allows you to manually set the "Opening of the lens" and LightMeter Pro calculates the value of shutter speed.
The mode (SPEED), "TIME PRIORITY" lets you manually set the value of shutter speed and the app calculates the relative value of Aperture (F).
Among the various options in addition to the ISO sensitivity value, you can set the focal length of the lens used. this parameter allows you to automatically set the maximum aperture value corresponding to the family of lenses. The f / stop value set is an indicative value could be different for lenses of the same focal length, but less or more bright.

What's New

Version 4.0.4

Fixed a bug that caused a display problem on iPhone7 and iPhone 7 Plus
Solved minor bugs

Ratings and Reviews


Baptist Boy

Confusing. A waste of a buck. Where is instructions. Save your handheld

Misleading Information and URLs

Media Maestro

(App installed on iPhone 3G with iOS 4) The app looks nice and runs well. Easy to understand controls and functions. The interface will be very familiar to anyone who uses a light meter with a digital readout. Although the 'beep' that sounds at the activation of controls is a bit annoying (sound on-off switch?). Too bad this app doesn't work.

There are two major flaws. First: Apparently this app requires a 3GS iPhone or iPhone 4 (for video function) which is not stated in the requirements. The display in the lower-left corner shows only a blue screen during attempted readings with an iPhone 3G. The readouts for shutter speed and f-stop show only flashing hyphens on an iPhone 3G with no change regardless of mode or brightness of light source.

Second: The URL for support brings up a '404 Not Found' page. The same '404 Not Found' page appears with this message "The requested URL /LightMeterPro/ was not found on this server" when the link to the AM PowerSofware website is used.

These are issues that need to be answered. Does the app actually work on non-video iPhones? Does the website for AM PowerSoftware actually exist? Hopefully these issues will be addressed forthwith by the developer.

Awesome App for a dollar!


Using it on an iPhone4, awesome app definitely does what it says and does it surprisingly well but don't leave it on for any extended periods of time. I set it down on my desk forgetting it was still running and the whole phone is warm to the touch.

Calibration is useful for us pro's that have the 18% grey balance cards and typically have someone in a wedding party for example hold it so we can manually white balance our cameras but for an app like this I'm really not sure the reason behind white balancing an app that measures light intensity in a particular spot.


Antonio Mauriello
16.4 MB
Photo & Video
Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© A.M.Power Software


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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