Game Tuner Is not working

[FATCAT]

Game tuner is not working because the Game Optimizing Service is Not available 
 Why

And its not even in galaxy store

[Grandmaster of mind]

No need to download game tuner.It sux.Because,there is two game boosters like game tuner.They are-gamer box and gamers GLTool Free.

[Grandmaster of mind]

So,download it as soon as possible.