How I Use It
We used popplet for mind-mapping, timelines, vocabulary and more. It's simple enough to use that it takes just a few minutes to explain and I noticed that students went back to popplet throughout the year when they were given choice about how to complete assignments. I think that speaks volumes - it was certainly a top 10 app for my middle schoolers last year. Because popplets can save to the camera roll, kids used them frequently in app-smashing projects.
One pain about the free version is that you can only work on one popplet at a time. My middle schoolers realized that you could slide one popplet off of the screen (imagine that the screen extends in an infinite direction beyond what is visible). You can then make a new one if needed...while still pulling the old one back when needed.
First off, we loved using it. I wish that the paid version were not so pricey, however, because $4.99 per head is not feasible in our district (even with a discount for the VPP). The collaborative feature of the paid version is something that I wish was available for all students.