I would normally be ok with paying for a service that offered something I valued if it meant they weren’t also going to make money from me as a product. This pretty much just says it won’t use your data for displaying ads. That’s the least important thing to me. I am more concerned with them selling my data or giving my data to organization that are planning to harm me with it. If an app was actually useful and being updated with new user centered features rather than only new monetization features and additionally would agree not to sell my data, ever, and to let me actually delete that data on request, I’d be happy to pay that much.