Recently I worked with the folks over at Google Creative Lab on this project that has now become know as #justaline. To try the app out for yourselves visit https://goo.gl/4fgom4
The app is available from the Google Play Store:
Just a Line is an AR Experiment that lets you make simple drawings in augmented reality, then share your creation with a short video. Touch the screen to draw, then hit record and share what you make with #justaline. Just a Line works on any device that supports ARCore.
This is an AR Experiment. To learn more, visit g.co/ARExperiments.