Hi. Thank you for the question. + this comment?
1. Never sell it. See text in the post. I know this is normal in the US, but way less so where I/we are from in Scandinavia. There's a fair mistrust given the norms in other countries, but as said in the post, I would rather abandon the project then start selling the data.
2. The data of the personality profiles gets processed anonymously. You as a user cannot even access the anonymous-results directly, there's an encrypted service in between the data-points, fetching only select data.
3. Everything is encrypted, on device, from device to servers, and on servers.
In other words, the intimate data doesn't stay on the device, and the user must trust the company that is grabbing the data.
Regarding trust, the must trust the company to not misuse the data now, must trust that future version of the company (and asset acquirers) not to misuse the data, must trust the company to perfectly secure the data against intruders.
(The talk of encryption and anonymization is usually mostly a diversion or misunderstanding.)