This paper describes a Capability Approach analysis of the capabilities, functionings, and conversion factors reported by learners on workplace-based mobile language learning courses. The study used secondary data from student satisfaction surveys from 556 learners who were all recent migrants to the US and who were using the courses to study English. Use of the Capability Approach highlights that the promises of mobile learning were not available to all learners as conversion factors (individual, social, environmental, and technological) inhibited their participation in the courses. The study shows how some learners experienced a tension between well-being and agency as they were unable to study the content they wanted in the way they wanted. It also demonstrates that factors around the business model of the company that created the courses impacted the level to which learners were able to participate in the program. Finally, the study illustrates that learners were able to extend the language they learned through the course into other areas of their lives and to help others.