It is pleasurable news for me. The achevement was got. 

Application StLinkp was installed 5000 times from Google Play. And it is hold high enough estimation at 4.8 stars.

According to Android Developer Console the StLinkP now installed on 1500 active devices all around the world.

Leaders among countries by active installation is Russia, USA, India, Indonesia, South Korea.

I hope that my appliction also will be usefull for people in the future. And I shall continue to make improvement.