SUPER-Calendar is a new calendar and scheduler.
Because it works differently and operate than other calendar apps.
The special highlights:
- Management of concurrent appointments
- Dates by category shown in color
- No rigid time frame for appointments
- Consideration of regional holidays and days of remembrance
  (for Germany, Austria, Switzerland and Liechtenstein)
- Detailed Birthday administration
- Planning periods (eg holidays, school holidays)
- Planning of recurring appointments (eg tennis)
- Import of appointments as an ICS-file (for example, rubbish dates)
- Access restricted by password

AND: Your privacy is important to us: it will be no calendar information stored on our server!

In addition to the promotional video, there is also a tutorial:
http://www.youtube.com/watch?v=gF1REgQYGWA