Advent-backed Transaction Services Group, a revenue management solutions company, completed the acquisition of PerfectMind, a health and fitness software provider. Financial terms were not disclosed. "We believe that our unique combination of software, integrated payments and value-added services allows our clients to do more of what they love. We want to take away the stresses and strains of their business processes and problems and allow them to focus on their customers," Davin Miller, Transaction Services Group CEO.