Scaling the EU cancer prevention app: policy lessons from pilot evidence across Europe

Background

Europe accounts for 22% of global cancer cases, with 40% preventable through lifestyle changes. BUMPER consortium (EU4Health-funded; 11 countries) developed the basis for the EU Mobile App, a flagship EBCP initiative extending the European Code Against Cancer via a behavior change mHealth platform.

Methods

Two pilot studies were conducted in seven European countries. The first used a mixed-methods design (n = 76) combining wireframe usability testing and focus group discussions. The second employed a pre-post design (N = 328 pre; n = 77 post) with the Systems Usability Scale (SUS) and an 18-item Cancer Awareness Measure quiz after seven days of app use.

Results

Cancer awareness improved significantly (50.5→53.3; p < 0.001; Cohen’s d = 0.49). Usability was moderate (SUS=62.56; below benchmark of 68) with navigation complexity across devices. Gains were greatest among low digital health literacy (DHL) users; older adults faced the steepest challenges. Users identified age-friendly design and data privacy as critical unmet needs. Policy implications: Applying a socio-ecological framework to pilot findings indicates action at four levels. At the individual level, awareness gains among low-DHL users signal untapped equity potential; AI-driven hyper-personalization and DHL-targeted design are promising ways to reach those benefiting most. At the interpersonal level, social and goal-sharing features can reinforce preventive behaviors. At the organizational level, national cancer leagues should be engaged to drive country-level dissemination and local app adaptation. At the systemic level, ECAC 5 content realignment, binding EU accessibility standards, and GDPR-transparent frameworks must be embedded in digital health tool certification.

Conclusions

The app shows measurable promise for cancer prevention at scale. Realizing EBCP equity goals demands coordinated action, from AI-enabled inclusive design to regulatory alignment with the recently launched ECAC 5.

Key messages

• The EU Mobile App improved cancer awareness in 7 days (50.5→53.3; d = 0.49), with greatest gains among low-DHL users, showing personalized mHealth can support equitable cancer prevention.

• EBCP equity goals need coordinated action: AI-enabled design for varied digital literacy, cancer league partnerships, and ECAC 5, accessibility, and GDPR standards in certification.