Quick Questions is a FREE user/community based questions and answers app.

A High Quality voice recorder for wave and mp3 files.
Schedule a recording to start in background with screen off.

This Calendar Widget offers many sizes and shows as many events as possible.

An effortless way to track attendance
Are you an educator? Roster app lets you keep track of your students' attendance. Whether you are a college professor, workshop facilitator or a guitar instructor, forget clumsy piles of paper since your Android-powered phone is already in your pocket. More information on http://www.flapsapps.com/roster-android/
All features are available in demo, but you cannot add more than one class.
Requirements: Android 1.6+.