nice reminder is the only app you really need when you need... a reminder! It has an incredible, easy-to-use, carefully crafted interface. On OS X 10.7 Lion, nice reminder backups your data on iCloud, no configuration needed. This lightweight app is an ultimate alarm tool for people that just want to get things done.
Features:
Clean and crisp, well designed user interface,
Simple - managing your reminders is fast and easy,
Lightweight and silent - you will not notice it unless you want to,