This article will guide you through the process of creating a simple flutter app that allows you to draw on a canvas. Then we will add the ability for this app to save those images to external storage volume using MediaStore API which allows to retrieve and update media files. Files saved this way are discoverable e.g. by system file explorer and will survive in case your app gets uninstalled. MediaStore API was added in API level 1 which makes it available in all Android devices!