Writing "There" and "there is" in the same sentence [closed]

The second there is gratuitous. Eliminating it does not weaken the suspense you are trying to create.

There, at the bottom of the list, is an app branded as "new."

You would weaken the suspense by writing

There is an apt branded as "new" at the bottom of the list.

Grammatically, the content of the sentence that is between the two commas is appositive and is considered "nonessential" (though it is essential to the element of suspense you are trying to create).

If I knew a little bit more about how your sentence fits into the screenplay, I could give you examples of sentences that could create even more suspense.