stand alone sound meter vs software

[outsider]

can a software replace a sound meter?
i need to read the spl of my spekare since i have to set up my 5.1 system, can i do this via a software?can I read read the spl level and if yes how do i get the correct calibration?

 

[Massive Master]

You'd need the meter to get the calibration...

 

[outsider]

apple fuzz measure software in specifications has "sound spl measurement", why, i guess a software can do analysis but an absolute spl measurment it takes a stand alone sound meter , right?