Belger,Not sure which one you are talking about. I am really impressed with Three of them:


This one is a DSLR controller, but I can't run it on my phone because it's not campatable, but looks really handy and useful: DSLR Controller


and here is one that I do use and really like for judging light angles from sun and moon: Sun Surveyer


And one more that I really like for depth of field calculations etc: Photo Tools


Hope this helps,


Bob