Dont use!!!
It took 4 trips to the Apple store and leaving my computer for nearly 4 weeks total before the Apple Genius figured out it was the Harvest app causing problems on my computer. It has a flaw that at times it uses excessive cpu and steals memory from other apps, it basically locks up your computer and you cant do anything but do a hard restart. I recommend that you dont use the app and just use the online tool. Harvest is great for tracking time but the app has serious flaws.
Duneslider about
Harvest