You like using your old film camera but it doesn't have a built-in light meter?
Use Luxilux in aperture priority mode (Av) by choosing the ISO and aperture, and Luxilux will calculate the right shutter speed to get a proper exposure.
Use it in shutter priority mode (Tv) by choosing the ISO and the shutter speed, and Luxilux will calculate the right aperture to get a proper exposure.
You can choose between full stops, half stops or third stops for ISO, aperture and shutter speed.
If your device has two or three cameras, you can switch between them.
This allows you to specify the area for the meter reading even more accurately.