> Apple provides an API, but Apple doesn't ask for reviews. The app has to initiate the process to ask for a review (through Apple's API).

I'm aware. The API to do so limits how often you can ask, because of the incessant nagging people did. Minor correction to my earlier comment: It's 3x/year, not 1x. https://developer.apple.com/app-store/ratings-and-reviews/

The nagging devs now get around this by doing their own prompts before it. (As many shitty websites do for web-based push notifications, for similar reasons.)