I just launched Pix Picas, which is a standalone version of the drawing mini-game found in Namespace. You can download Pix Picas for Android free here:
The iOS version will be coming soon.
Note: This is version 1 of the App and I plan on adding a few more features in the future such as more colours to choose from, possible saving and sharing options and a couple more things.
You can also ceck out the Namespace Kickstarter here: