Method two, export recording to the computer through the iTunes.
Step 1: Install itunes on you computer, you can download itunes at apple's website.
Step 2: Connect your phone to your computer
Step 3: Open itunes, as shown in Figure 1, click the phone icon
4, Enter the interface in Figure 2, select "Apps", Find "File Sharing", then select the "Sound Meter "
5, Uou can see some files like "xxx.caf", they are your recording files. Then you can click on "Save to ..." button to save the recordings to your computer.