Which ones do people like the best?
I've downloaded MobiAudit, Observa, Presto Shopper, Field Agent, Shopper Hub, Mobee Eyes On, iSecretShop, The Source Mobile, ShopperHub, iShopFor Ipsos and Mobee.
Several of these I believe are just used to fill in reports after you get assigned such as GoSpotCheck an WeGoLook.
I honestly haven't looked at half of them. Several of the shops for Observa I have looked at seem like too much work for the fees charged, but I believe people have said they get paid in minutes after the Observa reports are submitted.