Daylite is not HIPAA compliant.
Daylite on your iOS device cannot be locked outside of the locking feature on your iPhone/iPad. There is no way to log in and log out of Daylite without having to wipe the database each time.
Daylite on the Mac is similar in the fact that when you launch the application it will keep you logged in.
You can log out of Daylite, but if you quit the app and relaunch it, it will automatically log you back in.