Calendars 5 vs 24me
When comparing Calendars 5 vs 24me, the Slant community recommends Calendars 5 for most people. In the question“What are the best calendar apps for iPhone?” Calendars 5 is ranked 5th while 24me is ranked 16th. The most important reason people chose Calendars 5 is:
Calendars 5 uses the reminders that already exist, and can add new reminders with Siri.
Specs
Ranked in these QuestionsQuestion Ranking
Pros

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

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

Pro Natural Language Input
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.
Pro Pleasant and intuitive interface
The choice of font size, color and user interface widgets are all esthetically pleasing.
Pro Notification center
The new notification center puts all the info in one place, and lets users choose from several different views.
Pro Repeating tasks is easy
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.
Pro Supports Drag-and-drop of events to reschedule
Moving the date of an appointment is easy.
Pro Integrates with Android and iOS
The app has an Android version and an iOS version that syncs with the native reminders app.
Pro Combines 4 apps into 1
The app lets you manage your notes, calendar, personal accounts, and to-do list from one place.

Pro Cuts down on procrastination
The self-proclaimed "assistant for everyone," 24me helps people break the cycle of procrastination and willpower exhaustion by automating things they may have otherwise put off until later.
Cons
Con The Calendar does not clearly show dates
Con Limited map compatibility
Calendars 5 only uses Apple's Maps app, so Google Maps is out of the question.
Con No desktop or browser client
