Vernier Video Physics

As the iPhone 6 can record at 240fps but fudges the time stamps, I need for this app to allow me to tell it the fps of the video being analyzed.

I used this app for several months for teaching and now it crashes every time I try to open a video for analysis, the app crashes.

When this app works well, it is great. However, in the newest up date, it sometimes becomes impossible to get the video controls back after they disappear. I've even had the circle for placing tracking dots disappear a few times. When this happens, there is nothing to do except restart the app.

As a middle school science teacher in an iPad school, this app has been very useful. Capturing data is a snap (use a iPad camera stand) and analyzing it is instantaneous (the App does the math). Students can focus quickly on what the charts "say," rather than spend hours trying to make charts. The only downside (4 stars, not 5) is that the timer cannot be set to 0.00 sec at the start of the action. There are times when it would be helpful to be able to start the timer with the first marking dot.

Getting accurate results requires that you know what you’re doing, but if you do, then it’s great. The auto tracking is meh, but manually adding data points is quick and easy. Unfortunately, analyzing the data in this app is crap. Instead, download Vernier’s free Graphical Analysis app and import the data into that. Once the data is there, you can view x and y position and velocity data as well as do curve fitting. All in all, well worth the money for a physics classroom.