Tempo is Your Personal Butler
Apple’s built in calendar for iPhone is handy and everything, but they just don’t put the same effort and ingenuity into their native apps that you can find from a dedicated developer. Tempo Smart Calendar is my calendar of choice.
What’s neat about Tempo is that it pulls in data from across your phone–contacts, locations, emails, Facebook data, and more can all be integrated into your events automatically. If you’ve got an appointment for lunch with Joe, Tempo will find Joe and keep his phone number handy in case you want to send off a quick “running late” text.
Even without its smart features, Tempo’s fluid interface and view options make it a clear winner.