Solar panel monitoring... cost?

[ButchDeal]

There is an app. https://itunes.apple.com/us/app/sola...384374347?mt=8

[mdb]

Anyone have any experience or opinions on the LG micro inverters? (Mono X ACe) They appear to have a 25 year warranty. One of my quotes has them paired with LG panels and an annual monitoring cost of $25/yr. I assume the monitoring system is provided by LG. (LG claims it's a faster install due to less cabling as well.)

I think I'm mostly interested in how they might compare to SolarEdge and Enphase.