Try the free version of the app first with oneclass.
https://play.google.com/store/apps/details?id=com.apps.ips.randomstudent2trial

Main Features
• select a student at random
• device speaks name aloud
• name quiz feature to learn student names quickly
• track correct and incorrect responses
• student groups

Students enjoy the 'speak aloud' feature in my classroom.Participation is more equitable and students enjoy participating inactivities more when using the app.

Google Doc User Guide
http://docs.google.com/document/d/1PVSXNaSZapenlc0cV42JE2UUAKv_rshRKRoXs32cWuI/