My doodle making Android app.
GridPaint is an Android app that let's you create wonderful, complex patterns easily! The application stems from my frequent pattern scribblings with pen and squared paper. GridPaint makes pattern making easier and faster. You can also make really complex patterns that perhaps you couldn't do without it.
In GridPaint users draw lines between points, the system can then mirror the line. This can result in cool patterns. The painting is highly configurable, e.g. enabling users to change background and line color. The user can also save and share the resulting images.
For more info and a possibility to download the app for free go to Google Play Store: