Probably doesn't want people who are paying for it to know how much he's making. At least, doesn't want that to show up as the first thing in the search results when people search for it.
Let's just ask this the other way around. What would he gain from people knowing how much he makes from that app ?
On the other side, I think that some people, seeing he is making some money, would feel he's charging too much (or something else). It may not happen, but why take the risk ?
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Probably doesn't want people who are paying for it to know how much he's making. At least, doesn't want that to show up as the first thing in the search results when people search for it.
Pardon my naivety, but... why?
Let's just ask this the other way around. What would he gain from people knowing how much he makes from that app ?
On the other side, I think that some people, seeing he is making some money, would feel he's charging too much (or something else). It may not happen, but why take the risk ?
Or maybe his paying customers would worry that they're relying on a service that's considered to be a side project.
Both great answers. Thank you!