Light Meter Pro measures available light to help with setting the correct exposure. There are two modes available - single and continuous giving you option to take a single reading or keep taking readings continuously.

This version will set correct aperture based on the ISO and Speed you select. You can use the software buttons or volume keys to change the speed and have aperture change with it. You can also set the volume keys act as a trigger to take a measurement.

Tactile feedback is provided on each button pushed but can be turned off.

You can also calibrate the app to match the values coming from your meter.