My Take
I personally really enjoy Kahoot. It engages students while they learn. It makes the learning fun by making it a competitive game. The analytics are great to see which students need more help in specific areas. I think that this is very useful even to use in college level courses.
How I Use It
I would use this as a review for a test, at the end of a lesson to reinforce learned material, or to familiarize with a topic. This can be set on 1:1 mode or group mode and the whole class participates in this activity. I think it makes learning more of a game and the students really enjoy this app.