Working with calendars on the phone for accessing, adding and modifying calendar entries might be useful in your app.
No built-in Visual Coding blocks for working with the calendars currently exist in Aquro, but you can still use your own custom code.
You can always use your own custom JavaScript code to work with the calendar.
Aquro is using the cordova-plugin-calendar plugin for this.
More info can be found at: https://github.com/EddyVerbruggen/Calendar-PhoneGap-Plugin