Good app - requires some time to understand – Light meter wheel Review

I bought this app because i have a camera with several lenses and I wanted to know when each lens would be usable without pulling up my camera. It works well for that purpose but you do have to have some understanding of photography and understanding of how lenses work to use it that way. If you have that and you don't mind carrying your iphone or iPad around wherever you're shooting it works.
Review by 123MikeD on Light meter wheel.