Google's Calendar service is one of the best out there. Just because of Google's web presence, your Calendar is available to you on almost any platform, so you never miss an appointment.
But the Android app leaves a lot to be desired.
As the stock calendar app on your Nexus 5, Google Calendar is integrated at a system level. The user interface, though, is not the best out there. For one, the month overview only shows you colored bars that indicate an appointment on that date. What appointment? No telling—unless you go into day or week view.
But thanks to a nifty mod done by XDA user... more