The native BlackBerry calendar is a decent application but it’s fairly bare-bones. Calendar Pro by SBSH seeks to improve on the native BlackBerry calendar application by introducing features such as information tabs and color coding. The app also allows you to shift between daily, weekly and monthly views more easily, allowing your schedule to be a little more rich and useful. Calendar Pro also features a dedicated tasks manager, recurring items engine, category coloring and icons and more.
Currently, Calendar Pro by SBSH is around 60% off and selling for $5.99. Be sure to check out the feature set as it goes into great detail about the tweaks that may make your calendar more effective.