Those apps aren't at all accurate: https://www.dialux.com/en-GB/news-detail/luxmeter-app-versus-measuring-device-are-smartphones-suitable-for-measuring-illumina

Those apps aren't at all accurate: https://www.dialux.com/en-GB/news-detail/luxmeter-app-versus-measuring-device-are-smartphones-suitable-for-measuring-illuminance https://www.dialux.com/en-GB/news-detail/luxmeter-app-versus... Value for sunlight should even be higher, the bulb is only a little too high. https://en.wikipedia.org/wiki/Daylight https://en.wikipedia.org/wiki/Daylight