[davismwfl]

Not really answerable in general terms at this point. People have shown they will pay for some apps but not others. Social apps require the network effect which is hard to build so adoption is the hardest problem to solve, hence any friction (e.g. payment) can lead to less people signing up etc.

But other apps are fairly easy to get people to pay for where privacy could be a key differentiator. Let's be honest, very few actually do give you privacy beyond maybe a couple of email providers. Spotify which people pay for to remove ads still winds up using data about you and almost surely selling profile information as a revenue stream. I don't know this for a fact so feel free to correct me, but I would be shocked if they didn't as most companies do today because charging $10-15/month is hard to build a large company off.

[b-pixel]

“But other apps are fairly easy to get people to pay for where privacy could be a key differentiator”

Yeah apps that collect super personal information (i.e security solutions, baby monitors) I can imagine privacy being key. But what about everyday apps like fitness trackers, journals, habit trackers and personal finance? From what I gather people complain about privacy of those apps but would rather go a manual route instead of paying for a private version of it.

[davismwfl]

I think the reason most people don't pay for privacy on the apps you listed is the value proposition isn't there. e.g they can do it manually cheaper, faster and easier then the app would allow them. So that could be bad app design, bad problem statement or low value to cost. With consumer apps you have to convince people the value of the app is more then what they spend, and consumers are picky. Not to mention you have to stand out in a crowded market, which is an even harder problem in many ways.