Edge Tracer is a free image editing app that is available for Android devices. Developed by Magichour Corporation, this app allows users to easily cut out unwanted sections from photos and illustrations, make the background behind the image transparent, and compose the cutout on other backgrounds. The app automatically detects the borders of the image and produces a highly precise cutout without the need for manual tracing around the image.

Users can delete monochromatic backgrounds or similar colors around the image by simply tapping the section they want to delete. The size of the work area can also be adjusted to enable fine-tuning of edits. The app can be used in conjunction with Twitter, Instagram, and other SNS apps.

The app offers primary functions such as sticker creation, photo taking, loading mask images, cutting out by tracing, automatic deletion/restoration by setting color via tapping, manual restoration/deletion using a brush tool, preview, cursor offset for setting range, brush type selection for editing, undo/redo, and reset of selected area. The app also offers screen operation tools such as zoom in/out, shift, and increase size of working area.

Overall, Edge Tracer is an excellent image editing app that offers a wide range of features and functions for users to create stunning images.