Q: What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "I dont know what is enter key"
A: ★


Q: What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "One thing Music were stopping in the background. When i start using this app  i cant play music when i locked it. Can u fix this in the next update please"
A: ★★★


Q: What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Awesome camera!! The option to save to sdcard comes in handy on my S4 Google Play Edition. The only downside is that its a bit laggy to open  but maybe its just my phone. I can honestly say that Open Camera is better than stock google camera."
A: ★★★★★


Q: What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Good app for privacy and firewall bypassing."

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
A: ★★★★★