Tool for periodically nmapping 3000+ ips?

I am looking for a tool to scan 3000+ ips on a daily basis and report the diffs (new ports, new active iOS) back to me. I’ve looked at nmap-diff, but found it too cumbersome/not detailed enough. Currently looking at IVRE and Scantron, but I might miss the best tool out there. Any suggestions?

Edit: thanks to everyone for pointing out that you can do this with bash scripts. I know it’s possible, but most of the scripts I’ve found give a short summary between 2 scans, but that isn’t workable over a longer period of time since it will be hard to keep track of the changes (would need to put them into Excel or something). Am I missing something here?

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