Meta uses page visits, signup starts, completed Music Agent registrations, checkout starts, and first paid subscriptions to measure Facebook and Instagram ads and show relevant ads. Bovo keeps first and latest campaign references for signup-to-payment reporting. OpenAI measures ChatGPT ads using page visits, product interactions, completed Music Agent registrations, checkout starts, and paid subscription starts. With your permission, the app shares hashed email and customer identifiers, available ad references, and your browser user agent for matching.