Below are two apps, helpful for busy executives.
This app is basically a timer; the idea is that you work hard for 30 minutes, then, when the time pings, you get 30 minutes to be less productive. You repeat setting the time period you feel is appropriate in order to boost productivity.
No more standing in line waiting for a rental car. This free Android and iPhone app lets you reserve a car at a fixed price. Your rental is then delivered to you via valet when you arrive at the airport. Plus, your smartphone unlocks the car and plugs in your playlist. Upon return, the in-car technology records the fuel usage. This app is currently available at select airports, but is expanding rapidly.