Is there a service for parsing the id of new Instagram/VK commentators/subscribers?

Question

Marketing

Good afternoon!
I am looking for a service or program that could collect user ids from other people's accounts / groups. It is necessary to collect id of commentators and new joiners (preferably for a period of time). That is, she could monitor and identify new commentators or subscribers and collect the id of these users. These id's will be used for mailing in the future.
Does anyone have any experience with this and what would you recommend?
Thank you in advance!

Answer 1

Well, just collect a list from the group and make a comparison at different times in Excel, and there will be newcomers
Commentators, it seems to me that all software can collect

Answer 2

Good afternoon, eashla
I'm the CEO of ninja-copy.com , we are developing a tool for instagram. I would love to do something like this in my service.