thank you very much. I've finally figured out how to use it by reading your instruction . this app is definitely a great application which can be perceived as a workaround for part of hardware camera button! besides, it also offer ways to customize the way to take picture (auto-focus off). however, i met a problem, my faulty camera button doesn't work well for half-press, so, i might get the timer section successful one time out of 8 times trying . if this app could function by touch screen only? and if it is possible to keep auto-focus option in this app? sorry for the trouble, i hope i'm not asking too much .