Late to appointments on the hour because the 15 minute alarm was, well, 15 minutes prior?

A simple hourly chime.
- chimes can be suppressed outside normal waking hours
- can be configured to "run fast" for those of us that used to set their watch fast
- a pleasant standard glingle, or a custom chime of your choice, any duration
- pebble watch notification support. getpebble.com for a subtle vibrating wrist reminder of the time