Since I've had some experience with iSecretShop I wanted to clarify a couple of things.
Yes they do have a smartphone app for reporting shops, but, and this is a big one, there is no requirement to use the app so a shopper doesn't have to have a smartphone. It is entirely voluntary and reporting can still be done on the website in the traditional manner. There is also the option to do part of a report, save it, then finish and submit at home.
They also provide a central job board for several companies. While they don't have anywhere near the companies that Jobslinger or even MSJobBoard has, they are not just for Business Evaluation Services. Without going to the site I can't recall how many companies. I know for sure that A Top Shop is on there.
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