I would say I am not collecting any personal information, and the information being collected is for security and transparency, deemed as necessary. We are not setting any relevant cookies with the app, it is simply a research tool. I may add a feature in future where you can pay X to have your search privatised, or some sort of package or whatever, but as it stands transparency is key. But I am happy to be proven different so that I can improve the experience.
I will add that we do need to have a forward facing privacy policy and some GDPR stuff, but as it's in a sort of development phase it's constantly changing and I don't see it being useful.
Thanks!