Is there an instagram contest software that does this?

Hey guys as you probably know there are those posts where if you like comment and tag an IG post you get a chance to win something.

Now is there a software that automates contacting people who does that?

Also will it have bigger effect if I use high quality metric influencers to do it for me? My goal is to get my post highly engaged so should I let them post the steps or should I just do it from my own account