This study centers around the development of a crafting tool within the CardioVitaal cardiac rehabilitation (CR) program, aimed at transforming physical activities into personally fulfilling experiences for patients post-rehabilitation. The design vision emphasizes leveraging health crafting theory to empower patients to discern what brings them joy in exercise. Through literature reviews, expert interviews, collaborative sessions with cardiac patients, and iterative design processes, a digital crafting application was designed. This app serves as a digital companion, offering personalized activity recommendations, action planning flows, and reflection prompts to support patients in sustaining physical activities beyond the confines of the CR program.