Calendar apps for smart phones are not difficult to find, but downloading an app that scans your contact list and provides relevant information about who you are meeting with and where is neat. The Tempo Smart Calendar works in this way to provide you not only up-to-date information about your next meeting, but also information that might avoid procrastination and forgetfulness.
The only real drawback is that your calendar information is held hostage by the entries on their server rather than your own phone. In the event that their servers crash, you might have a hard time remembering all of the appointments and meetings that you have designated for the time. In addition, there seems to be a queue to download and create an account with this program. Still, as a free app, it is definitely worth a try to see how it compares to the many similar calendar apps that are currently available.
Tempo Smart Calendar App [iTunes]