Right; except sparkle is terrible. At exactly the moment I want to use the app I get bothered by a difficult decision: Do I want to interrupt the flow of my work and wait a couple minutes so it can download and update, moving something that should happen in the background into something that directly interrupts my flow. Or skip the update and hope there were no important security / compatibility issues fixed. (Or kick the cart down the road and have it remind me later.)
The button I want is “update in the background when you close the app”, and it shouldn’t ask; it should just quietly do that. For all that chrome’s updater is like a tropical disease, it sure has way better UX than sparkle.
You forgot that, after you've told it to download the update, it pops up another interrupting dialog asking whether you want to install the update. If you just tell it to update and go get a coffee, when you come back, it won't be done.
The button I want is “update in the background when you close the app”, and it shouldn’t ask; it should just quietly do that. For all that chrome’s updater is like a tropical disease, it sure has way better UX than sparkle.