The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Dream Studios, LLC:
Light meter - Easy to use, quick Lux measurement in your pocket.With latest iOS 8.0 (iPhone) features and technology, this app works great with high precision in most conditions and you could save on purchasing of professional illuminometers which cost hundreds of dollars. Features:- Unique and attractive design.- Exclusive simplicity and convenience of use .- Lighting fast measurements.- Lux measurement (aka lumen, luminance, luminosity).Tips to use: Open the app start the lux measurement with rear(back) camera, tap the screen show the current lux measure result. Tap the screen will continuous the realtime measurement.Notes:This app is for your personal purpose only. It can NOT replace the professional Lux device.