OnTime is a useful app that syncs up with your mobile calendar, storing appointment and contact information. The best part of this app, though, is that it integrates GPS information, keeping track of where you are in relation to when and where your next appointment or meeting is scheduled. It’ll give you route maps to your next destinations, including turn-by-turn directions that can be altered if you want or need to take extra stops. The app even checks local traffic updates to alert you when it’s time for you to leave, so you’ll never be late. Even if you are going to be late, the app offers one-touch options to email or text contacts to warn them in advance. If punctuality isn’t your strong suit, it’s worth checking out this app from BlackBerry App World, for $1.99.