Simple, Fun, Powerful, Free for Students is an audience response system powerful enough for large crowds yet simple enough to master in minutes.

JoinProf is free for students and $5 per month for educators.

JoinProf is browser-based. This means no apps to download. Teachers and students simply open a browser, go to and begin. Students can answer questions or ask questions, right from their smart phones, tablets, or laptops. The interaction holds students' attention and makes learning fun!
Anonymity = Interaction

Think about it. Most all of today's classroom technology is used to convey information to our students. How must students convey their thoughts to us, the educators? By raising a hand.

Invite students to share questions via their smart phones, and you'll get far more questions. Ask students to share their opinions or ideas via their smart phones, and you'll get far more opinions and ideas.