There are a couple reasons app developers should strive for originality.
Copying Github's design only reminds me of how your app is second to Github. That Github was the one who thought of the beautiful interface and that by using your app I will be using a copy and not the original. The copy is inferior to the original in my mind and I will never see the app as an equal. This really dampens the excitement I have for it because it might never be able to compete with the experience Github provides.
Another example is Open Office, everyone uses it and it does the job. But no one loves it, because its a copy. Its not the original and it will never be the same as using MS Office. Now compare that with Apple's iWork. Its not a copy; its an original. When I use it, I feel comfortable in knowing that Apple has worked to provide an experience that is second to none.
Another example is Open Office, everyone uses it and it does the job. But no one loves it, because its a copy. Its not the original and it will never be the same as using MS Office. Now compare that with Apple's iWork. Its not a copy; its an original. When I use it, I feel comfortable in knowing that Apple has worked to provide an experience that is second to none.