The apk version usually has more features and gets updates faster than what you find in official stores. I downloaded mine from 1xbet apk download latest version and it installed without any issues. The reason people use apk files is because sometimes betting apps aren't available in certain app stores due to regional restrictions. Just make sure you enable installation from unknown sources in your phone settings first, otherwise it won't let you install it. The app itself works the same as any other version, same sports, same markets, same payment options. Keep it updated though because older versions might have bugs or missing features. Takes like two minutes to install once you download the file