Bipolar disorders (BD) are chronic and usually recurrent major mood disorders with onset typically during adolescence and early adulthood, a lifetime prevalence estimated at 2.4%, and a course of disease that entails fluctuations between depressive and manic episodes. 1 Higher recurrences of mood episodes in BD have been related to reduced response and poor adherence to treatments, progressive neuroanatomic brain changes, and cognitive dysfunction; which, in turn, is associated with poor clinical course and functional impairment. 2,3 The recurrent, and sometimes progressive and severe nature of BD, along with high rates of morbidity and mortality, 4 translates into an estimated 8 to 12 years shortened life expectancy, 5 reduced quality of life, and substantial burden of disease, making BD one of the main causes of disability among young people. 6,7 This recurrent illness course may be stabilized and overall prognosis improved on appropriately selected prophylactic and maintenance pharmacological treatments, and adjunctive psychosocial interventions, which have proven effective in preventing mood recurrences in BD, 8 especially in the early course of the disease. 9,10 However, people with BD often lack insight about their symptoms and the need of treatment, especially in manic phases, 11,12 and access to evidence-based psychosocial interventions for BD remains limited.In addition, common psychiatric clinical monitoring through routine medical visits mainly consists of periodic cross-sectional symptoms assessments that rely on self-reports, posing several limitations due to recall and confirmation bias and misinterpretations. 13 Hence, more effective strategies for the clinical management of BD are imperative.Advancements in digital technologies might hold potential solutions to the above challenges. Nowadays, smartphones and wearables can capture behavioral, cognitive, and mood information in an objective, continuous, passive, unobtrusive way, 14 which is known as digital phenotyping. 15 In the last 5 years, the use of smartphones and wearables in psychiatric research has become widespread and yielded promising results. 16,17 BD represents the ideal diagnostic framework for digital phenotyping, as its biphasic nature overtly