I didn't say to use my app. I said to build your own. Only then can you know the CIA isn't involved.
Let me add that except for DMs (which probably shouldn't be part of nostr), nostr isn't about secrecy. It doesn't matter if the CIA is involved. As long as your notes get out there. The point is to be public and not be censored, not to be private. If you want privacy you need a different tool.