Background <p>In 2019, the World Health Organization (WHO) set the goal of reducing the number of dependent older people worldwide. To meet this objective, the Gérontopôle (centre on ageing) of Toulouse, France, implemented the WHO ICOPE Monitor digital application for frailty screening in older people. However, frailty screening in primary care remains limited.</p> <p> In this qualitative study, the aim was to identify the factors that limit the use of ICOPE Monitor and the social representations surrounding its use, or not, by healthcare professionals.</p> Methods <p> The data was collected through observations, individual interviews and focus groups with healthcare professionals from two French primary care communities that include 449 healthcare professionals. Data analysis was based on the principles of grounded theory.</p> Results <p> Data analysis revealed a low use of ICOPE Monitor by healthcare professionals. Only 12% (56 of 449) of the healthcare professionals working in the two primary care communities followed the ICOPE training course. At the training end, 95% of the 56 healthcare professionals who underwent training expressed an interest in using ICOPE Monitor. However, only 10/56 healthcare professionals performed at least one ICOPE step 1 screening, but without the 6-month follow-up. After 2 months of use, difficulties were reported during the seventeen interviews and two focus groups, linked to the many definitions of the term “frailty”, the target population, the use of digital technology, time and financial constraints, and the lack of dedicated professionals.</p> Conclusions <p> The study highlighted the social and financial obstacles hindering the use of ICOPE Monitor and more broadly, the implementation of frailty screening by primary care practitioners.</p> Trial registration <p>NCT05541731 (ClinicalTrials.gov ID), registration date on 20,220,913.</p>