Like/Dislike buttons under each post

I intend to use Ghost platform to publish short stories.
Initially I’m not planning to charge readers, I just want to measure readers’ engagement.
Since the website views statistics will most probably will be bogus/skewed due to bot traffic, I think the most reliable measure of readers’ engagement would be Like/Dislike ratio under each post.
Is it possible to implement Like/Dislike buttons under each post? If yes, which subscription plan should I purchase?