You can find out many practical alarm clock apps on App Store. But if you need more functions such as task reminder, the following alarm clock app Cool Alarm Clock & Day Reminder may be more suitable for you.
Cool Alarm Clock & Day Reminder is a versatile alarm clock app developed by studeo4ios, and designed for both iPhone and iPad. The universal app features gorgeous LCD display-style user interface and multiple practical functions. In addition to waking you up using 8 built-in sounds or your favorite music from iPod library, the alarm clock app doubles as a weather app to show you current weather info including current temperature, weather conditions and high and low temperatures, and you can also add alarm message for alarm in order to reminder you important events just like a reminder app.
Cool Alarm Clock & Day Reminder with a size of 4.9 MB is compatible with iPhone, iPad and iPod touch running iOS 4.0 or later. The universal app is free for a limited time at present. If you’re interested, jump to App Store for more details.