Poll Everywhere App. Sign in and register with speakers for attendance or graded questions. Participants answer questions on their phones, and a leaderboard updates live to show who’s in the lead.

Download the app on your ios or android device to see the updates in action. For example, you can create an attendance poll with all the students in the class. The latest installer takes up 1.1 mb on disk.
The first app is poll everywhere which is available on both android and ios.
About poll everywhere for ios: To use it, download the app to your ios or android device and select “remote control” from the menu. The audience responds using the app, a private response page, or via sms texting. If you have 13 people each submitting two responses to a poll, your poll will lock and no longer accept responses once the 25th response is received.