Previous studies have proved that healthy behaviors hinder the onset and progression of tumors. Digital therapeutics (DTx), playing pivotal role in facilitating behavioral adjustments through educational interventions, lifestyle support, and symptom monitoring, contributes to the goal of tumor prevention. Our study aimed to assess the feasibility of using the AITI app, employing the DTx approach for cancer prevention and examining its impact on lifestyle modifications and SF-36. In a 4-week trial with 57 participants engaging actively, we found both the average daily activity rate and 4-week retention rate at 35 (61.4%). The USE Questionnaire scores (validity, ease of use, acquisition, and satisfaction) ranged from 68.06 to 83.10, indicating AITI's user-friendliness. Participants noted enhanced awareness and positive habit changes, particularly in exercise and diet (p<0.0001), suggesting the DTx approach's potential for advancing cancer prevention. The study highlights the feasibility and acceptability of this lifestyle intervention using DTx via AITI, demonstrating effectiveness in altering behaviors. However, larger and longer studies are needed to comprehensively assess its impact.