Smartphone vs. Real Meters for Sound and Light Measurement?

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Are there inexpensive alternatives to light and sound meters? How about a multimeter that will measure both lux and decibels? Or what about your smartphone? In this video, I will test if they are any good...

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FULL MUSIC CREDITS
Time codes: 0:01 + 5:35
"Lightless Dawn" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100655

Time codes: 0:57 + 8:25
"Adding the Sun" Kevin MacLeod (incompetech.com)
ISRC: USUAN1900041

Time codes: 2:52 + 10:54
"Perspectives" Kevin MacLeod (incompetech.com)
ISRC: USUAN1300027

Time codes: 7:45 + 8:07
"Newer Wave" Kevin MacLeod (incompetech.com)
ISRC: USUAN2000024

Time code: 9:54
"Peace of Mind" Kevin MacLeod (incompetech.com)
ISRC: USUAN1200099

All music above licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...

Time code: 5:03
Mix of two tracks:
1) The Shimmering by fran_ky (freesound.org/s/237363)
Licensed under Creative Commons 0 license
2) "Spacial Harvest" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1100653

#Smartphone #Multimeter #LightAndSound