Kahraba or Not: grid or generator?

In Lebanon, homes switch between the state grid (“kahraba”) and a neighbourhood diesel generator (“moteur”), often happen silently. Kahraba or Not tells you which one you’re on using only your phone’s light sensor and a halogen bulb. The generator makes the light wobble slightly, the grid keeps it steady and brighter. Quick 25-second checks, an always-on monitor that beeps when the grid returns, no extra hardware and no internet permission. Free Android app, looking for testers in Lebanon!