[lutusp]

Maybe you should visit the Android app store, see how may apps are nearly identical, serve the same audience in only slightly different ways. And how rarely one hears cries of "copycat!" (Not never, just rarely.)

If you think negatively, you might say, "Oh, people will see me as a copycat." If you think positively, you might say, "I guess my idea wasn't so out of touch as I worried -- here's someone else trying to serve the same need. New let's see if I can do it better."