Solar Power Monitor is an unofficial and testing application for checking actual values from a PV solar inverter. The app requires a wifi box or wifi-card to be successfully setup. It provides real-time data on various parameters such as actual PV input power, voltage, and amperage, actual AC output power, active power, voltage, and frequency, grid voltage, frequency, battery voltage, capacity, charging, and discharging, SCC charge status, charging source, load source, output load in percentage, and input load from Utility or Battery in Watts.

The app supports various devices such as MPP Solar, EASun, Axpert, Mecer, Giant Power, Effekta, Flinslim, OPTI-Solar, Pro Power, Proline Energy, Inverex, Solarix, and SolarPower24. However, it is not compatible with other devices. The app is free to use and available on the Android platform. The Solar Power Monitor app is a useful tool for monitoring solar power systems, but it is important to note that it is not an official app and is not affiliated with any solar inverter manufacturer.