I loved using Plickers for quick, formative assessments and for reviewing content. But since they've decided that being an easy tool educators isn't good enough and they needed to become a "pay to play" service, I see a lot less utility in them.
I even bought a set of cards to use in the classroom because I loved it so much last time I used it! But I doubt I'll end up using it much, if at all now. Guess it's back to Kahoot!
How I Use It
Formative assessments, exit tickets, and review of material.