Video Physics brings automated object tracking and video analysis to iPhone, iPod touch, and iPad. Capture video of an object in motion, then tap to track automatically. Video Physics instantly creates trajectory, position, and velocity graphs for the object.

Video Physics is perfect for science students and instructors. Perform on-the-go analysis of interesting motion. Measure the velocity of a child's swing, a roller-coaster, or a car. Or, take a video of a basketball free throw shot. Video Physics will display the path of the ball and provide graphs of y vs. x as well as the x and y position and velocity as a function of time.

Features of Video Physics:
• Capture a new video using the built-in camera, choose a video from your Photo Library, or use one of our sample videos
• Track an object automatically or manually add points to the video frame
• Set the scale of the video using an object of known size
• Optionally set coordinate system location and rotation
• View graphs of trajectory and x/y position and velocity
• Export video with points
• Email the video and data for further analysis in Vernier's Logger Pro software for OS X and Windows
• Open data files directly in Vernier's Graphical Analysis app

Quotes from physics teachers:
"Just played with new Vernier video physics app on iPhone - it ROCKS! I remember the day when this would've cost thousands of dollars to do…." Mark Hines @mhines, teacher

"You should check out Vernier's Video Physics app. Students can email video analysis data to Logger Pro; very cool!!" @willkomme, physics teacher

Vernier’s Video Physics app is slick. - Ryan Bretag @ryanbretag, teacher and administrator

App Store featured: Staff Favorite, New and Noteworthy, and What's Hot!
2012 CODiE Awards Finalist - Best Educational Use of a Mobile Device

Hints for taking useful videos:
• Objects that are very different than their background (black/white) work best for automated tracking. It is also helpful to use a background with uniform color and shading. See our sample videos for examples.
• Do not move the camera. Analysis assumes the camera is fixed in position.
• The object in motion should remain approximately in a plane perpendicular to the viewing direction.
• Place an object with known dimensions, such as a meter stick, in the same plane as the motion. Use this to scale the video.

Video Physics is intended for use in science education. The video analysis done in Video Physics provides a useful technique for studying two-dimensional kinematics. You can do even more with Vernier's Graphical Analysis app for iPad, iPhone, and iPod touch or with Logger Pro software for Mac OS X and Windows.

What’s New

Version 3.1.2

Fixed: video capture for certain screen sizes, and setting scale and units for video analysis.

Ratings and Reviews

2.0 out of 5
2 Ratings

2 Ratings

GPringle ,

My Opinion

This app is a useful tool when conducting experiments, but doesn’t create data tables..

bruceathome ,


Update: when coupled with Vernier's Graphical Analysis app this now is, itself, a great app. It is very easy to get projectile motion data using this app and then email the data to yourself. You can then open the emailed data in the Graphical Analysis app if you have it, and easily analyse the data, including lines of best fit, equations of the lines etc.

Overall this app, coupled with the Graphical Analysis app, is great for physics students.


This App is fantastic, however it doesn't let you export the information as a csv or in any other way except what is used by their desktop software. I'm using an iPad - I don't want to have to rely on desktop software to do other analysis of the data. The graphs produced are pretty good, however if you want to determine the slope of a graph (for example to determine the acceleration due to gravity using the velocity over time graph for a falling object) you have to estimate the x and y values from the scale used in the graph. I actually put a ruler on the iPads screen to work out the scale to get reasonably accurate coordinates of the plotted points. This shouldn't be necessary! I should just be able to look at the raw data.

Mikey Deeee ,

Simply brillient

A lab in my pocket! Simple, cheap and effective. As a teacher of physics for many years I can now use video analysis software without breaking my budget or spending lots of time getting things to work! Love it!

App Privacy

The developer, Vernier Software & Technology, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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