There is no shortage of online tools for gathering feedback from students. I featured a selection of them in the latest version of The Practical Ed Tech Handbook. Loop is the latest one to come across my desk. 

Loop lets you create an online classroom to post questions for your students to respond to with emojis, with words, or by selecting an answer choice. You can let your students respond anonymously or require them to identify themselves. Those features alone don’t make Loop different from lots of similar services. What Loop offers that is somewhat unique is the option to respond directly to individual students even when they were responding to a group survey. The purpose of that feature is to make it easy to ask follow-up questions or to give encouragement to students based on their responses to a question posed to the whole group.

Loop can be used in the web browser on your laptop or you can use their free Android or iPhone apps.

Applications for Education
Loop fits in a gap between tools like Kahoot and Google Classroom. For that reason it could be a good tool for engaging students in discussions about assignments, course topics, or the general feeling of the class.