Calendars 5  vs Calvetica

Calendars 5 uses the reminders that already exist, and can add new reminders with Siri.

Unique and efficient way to display weeklong agenda in portrait view.

Calendars 5 makes it very easy for users to create an event by just typing it in human language.
Simply write something like 'Meet Ben tomorrow at 5PM at Starbucks' and Calendars 5 will parse everything, creating an event for tomorrow, inviting Ben from the address book and picking the Starbucks on the map.

The choice of font size, color and user interface widgets are all esthetically pleasing.

The new notification center puts all the info in one place, and lets users choose from several different views.

The UI provides a very simple approach to repeating events or reminders. Users can choose from daily, weekly, monthly, or yearly, number of weeks, or by specific days.

Moving the date of an appointment is easy.

Calvetica's month view offers continuous scrolling and shows how long events are, and whether or not they overlap.

Unlike many other apps, Calvetica offers flexible customisation of alarm times.

Quick and straightforward adding of new events.

For each event entry, a custom color can be assigned.

For some reason, many calendar apps don't include task lists. Calvetica offers tasks that sync between devices, and come with a snooze option.

To add an event, just tap and hold. Two fields will appear, event name, and time. When filling in the time field, a number pad will automatically be displayed for faster entry.

Alerts are automatically added and set to go off at a standard custom amount of time before the event.