Tools may provide automated "likes" and "comments" to make the growth appear more organic.
Reply to comments and interact with other creators in your niche.
Most modern "updates" include features to stay within Instagram's daily activity limits to prevent account flags.
To help you understand what this likely refers to, here is an analysis of its components and the broader context of such services. Breaking Down the Keyword
Many "follower" sites require you to log in with your social media credentials, which puts your private information and account security at risk.