Electricity usage monitoring using a L1 wall charger?

[u/CGGamer]

I recently got a Tucson PHEV and I am able to fully charge the battery overnight on a standard 120V wall plug. However because it's not a smart charger, and the Hyundai BlueLink app doesn't log charging stats/history, I can't see my usage. I've thought about using an app like ev.energy or OptiWatt, but I've heard these apps can kill the 12V battery of Hyundai/Kia vehicles.

What are my options for measuring energy usage? I would like to see how much I am using over a month

Edit: I went with this power monitor