Gluteal tendinopathy, a degenerative condition of the gluteal tendons, is a common cause of lateral hip pain. It is three times more common in women, affecting up to 25% of those aged over 40 years. Research evidence supporting the most effective interventions remains limited. A 2018 landmark three-arm RCT (LEAP trial) in Australia compared EDucation on load management plus eXercise (EDX) against corticosteroid injection (CSI), and a 'wait-and see' control on pain and global improvement in 205 individuals with gluteal tendinopathy (Mellor et al, 2016; 2018). Results showed superior and significant positive effects in the EDX group, compared with CSI and wait-and-see groups at 8 weeks and 1 year. A total of 14 EDX sessions was provided over 8 weeks in LEAP, but in the public healthcare system in Ireland, typically 5-6 physiotherapy treatments are provided. Therefore, whilst the LEAP trial demonstrated positive effects for EDX, implementation into clinical practice in Ireland is questionable as 6 or less treatment sessions are typically provided in public and private settings in Ireland (French et al, 2020). This two-arm feasibility RCT aims to evaluate the feasibility of conducting a future RCT of a reduced dose (6 sessions) of a recently proven efficacious physiotherapy treatment of EDucation plus eXercise (EDX-Ireland) to usual care for gluteal tendinopathy in an Irish setting. A Study Within A Trial will evaluate if exercise adherence is improved with use of a smartphone app compared with paper-based diaries.