Receiving daily updates for desktop apps would suck because it typically requires the app to quit and start again. A good compromise would be updates every four weeks. At the same time you as a developer always leave your app in a state were you could push an update anytime. So you still work incrementally in daily units of work.

Daily updates for libraries … if it's only publicly available code, I don't see a reason not to push daily. Anyone interested can check the commit logs. For compiled binaries on the other hand I can see update fatigue for users (other developers). Once a month or longer seems fine.

In the end, push regularly (daily, weekly, monthly, whatever fits you) without annoying your users by spamming them with updates, while at the same time reduce work units to a size that does not feel overwhelming.