Progressive Decoy of Crows is an Android application developed by Ilya Volotkovskiy. It is a free lifestyle program that falls under the subcategory of sports. The app serves as a manual on the appearance and voices of corvids, providing a large, streamlined sound base that is customizable.

Users can adjust the playback period and number of sounds to play, as well as split sounds into channels and play them in the background. The app is highly convenient and ergonomic, with an easy-to-use interface.

To use the app, simply install it on your device and connect an external speaker or amplifier (as the built-in speaker of the phone is not sufficient). From there, select the category of game whose sounds you want to play and start sound simulations in manual mode or adjust the desired interval of continuous playback in the background.

It is important to note that the use of electronic decoys may be prohibited by law in some areas. Overall, Progressive Decoy of Crows is a useful tool for those interested in corvids and their appearance and voices.