Apps launch automatically after update in Google Play Store
As answered by devconsole in the comment.


  If you want to find out which app is responsible run adb logcat, look for ActivityManager: START u0 {act=android.intent.action.MAIN ... from uid xyz on display 0. Note the uid number, then run adb shell "dumpsys package" to find out what app that uid belongs to.


My case was Mr Jump game.