Sometimes when you get down to serious business, it helps to have your day scheduled down to the minute. 30/30, which works on the iPhone and iPad, is an update of the good old-fashioned kitchen timer. The timed sessions of the day aren’t tied to the clock, but in minute chunks that you can customize in order to get things done. With this intuitive and attractive app, users are able to visualize their workflow easily. The app is particularly good for folks who like to build in short breaks throughout the day, but works just as well for keeping track of cooking or laundry times. And, if you do get sidetracked, the app lets you pause, add minutes, reorder tasks or start over as well. Free, for iOS devices.