Cease,
Shopmetrics is a software platform, just like Sassie. Lots of MSCs use it. In MobiAudit you can add the MSC to your account and use their app to do the shops, or you still have the option of using the company website to file your reports.
This is the main difference between Gigspot and MobiAudit.
If you join Gigspot you can no longer independently access the MSC's Shopmetrics platform, you MUST go through Gigspot, and the MSCs do not post all of their available jobs on Gigspot (or at least they didn't when I made the mistake of joinging Gigspot, thankfully I was able to get out after a long involved fight in email).