What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Simar Simar"
★

What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Thank you"
★★★★★

What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Good app"

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
★★★★★