I'm a freelance 3D/motion designer in Bern, and for years my honest answer was: more than I wanted to admit.
Not the big blocks those I remembered. It was the ten minutes of client email, the quick After Effects fix before dinner, the revision on a Friday evening. By Sunday I'd be scrolling file timestamps trying to reconstruct my own week, and all the small stuff was already gone.
BillHawk tracks the apps you actually work in, with no timers to forget. It pauses when you idle and resumes to the second, then turns those hours into finished PDF invoices with your rates and logo. It can also read your Apple Mail locally to find projects, quotes and payments. Native Swift, notarized, nothing leaves your Mac. One-time $29, no subscription.
