ideally hardpress on zap button would present you with a split if there is a quote note
Discussion
something like this 
would you be able to customise the split or would it be 50/50 split only?
Area code for the city.
Spider man is having me for dinner tonite. - The Cure
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battle of ui and feature rich…
With ui like this you could just do two separately if not even, inspired by having the ability to access the quoted tweet by clicking in this example tanel (this gets you to that quickly).
Random thoughts:
one could add a slider, or two separate amount fields, where these start and if your intention is only to do a regular zaps becomes an issue that probably isn’t the same given the context… just a quote note is very different than a quote note with text. Another question, even if it is 50/50 should it be double your default? Maybe it should be a both button not a “split” button.