Barometer, thermometer, hygrometer and luxmeter for ambiant air and device.
Barometer (in hPa or mbar), thermometer (in °C), hygrometer (relative humidity in %) and luxmeter (in lx) for ambiant air and device.
A chart displays the evolution of the illuminance in real time (in lux unity).
Do not be surprised if some measures do not work (displayed "Not available"), it is because some devices lack some sensors (for example the Nexus 5 only have the barometer sensor, and the luxmeter sensor).
Enjoy!