Digital transformation has led to an abundance of digital health technologies (DHTs) readily available for Physiotherapists. In July 2020, the Physiotherapy department at a London NHS Trust implemented a mobile health (mHealth) exercise application (app), Physitrack. This service evaluation aims to evaluate patient experience and identify any barriers to using Physitrack/PhysiApp in musculoskeletal (MSK) Physiotherapy. An online experience survey was sent to 10,287 MSK Physiotherapy patients who had appointments between January 17th and April 9th 2022.The survey received 1,447 responses (response rate: 14.07%), with 954 (65.93%) respondents previously provided PhysiApp as part of their Physiotherapy management. Most participants used PhysiApp (83.06%), found it easy to use (82.20%) and had positive perceptions on how it added value to their Physiotherapy treatment through its functionality. However, negative impacts on patient-centred care and practical exercise demonstration were apparent in the qualitative results. Key barriers to use included suboptimal explanation, digital exclusion, registration/ login issues and opinion that PhysiApp was superfluous to Physiotherapy treatment. These differed to the main barriers of why participants stopped using/ used PhysiApp less: if they were confident exercising without it, their condition improved/ resolved, loss of motivation, their exercise programme ended or if they found their exercise programme was unsuitable. Despite multiple interdependent factors influencing patient experience and barriers of using PhysiApp, the survey results revealed the significant influence that is exerted by MSK Physiotherapists. The patient-physiotherapist interaction can positively or negatively impact upon many barriers of use and the subsequent potential added value of PhysiApp to MSK Physiotherapy treatment. Future research should focus on those at most risk of digital exclusion and health inequalities, exploring their barriers to using mHealth apps and other DHTs.