Bango has announced Bango Analytics, a new goal comparison feature to see that allows mobile marketers to see which mobile ad campaigns and traffic sources deliver the best conversion rates. Advertisers can also compare the value of the traffic from third-party ad services using independent data provided by Bango Analytics. Some companies have already reported discrepancies approaching 20% between the traffic they are getting and what they have paid for, says Bango. With the Internet Advertising Bureau (IAB) reporting the need for "independent testing and scrutiny to build trust and confidence in the mobile advertising," Bango aims to fill this gap with a service that provides hard data, free from any vendor bias. The new goal comparison feature helps marketers measure the return on investment for campaigns across different ad networks to make smarter buying decisions. Bango Analytics operates as a hosted service, allowing mobile website owners anywhere in the world to connect their sites to the Analytics service in minutes and use it free of charge.