How I Use It
I use this in my classroom to increase student engagement. The students liked the videos and they are engaging. At the beginning of my lesson, I would show these videos to engage the students in the experiment. Sometimes these videos can be used as replacements for written instructions in lab experiments.
This app is free and it seems like it should be free. I would not use this for students to do individual work. It might be good for a homeschool science program but not for an individual classroom exploration. I think you can watch the videos as a whole class as a precursor to what they are doing in a lab. But my students like the engineering and coding apps better. They are more challenging.