Crossword Genius

Programme that’s drivel, quietly being dropped (3)

Ross

I believe the answer is:

app

'programme' is the definition.

'drivel quietly being dropped' is the wordplay.
I cannot quite understand how this works, but
'quietly' could be 'pp' and 'pp' is found in the answer.
A single letter 'a' remains which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

'that's' is the link.

(Other definitions for app that I've seen before include "Program for a smart phone, in short" , "Software item" , "Software for mobile devices, in short" , "Software program for a mobile device" , "bit of software" .)

I've seen this clue in The Times.
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