Ask HN: Tools for Offline Log Analysis

I am looking for a tool (paid or free) that will assist with analyzing logs for events that are out of the ordinary. When I google this, I get several tools that are designed for analyzing logs from a server. I am looking for something that I can input a log from an offline application (in this case an IOT device) and the tool will help look for anomalies.

Does anyone here have experience with this sort of application?

Thanks!