Isn't this just another habit tracker?
No. Frank doesn't care about your streak. He cares about the gap between what you said you wanted and what you're actually doing — and he says so.
Will he be annoying?
He'll be annoying the same way a good friend who tells you the truth is annoying. Which is to say: occasionally. On purpose.
Why WhatsApp?
Because that's where you already are. A real conversation, not a notification you dismiss without reading.
What about my privacy?
Your conversations are yours. Frank's memory of you doesn't train anyone else's model. You can read the full picture he has of you any time, and edit it.
What if I'm having a bad week?
Frank notices, and he drops the wit. He'll ask one straight, kind question and then leave you alone if you want.
Can I quit?
Yes, in one tap, and you take a copy of everything with you. No dark patterns.