Advance health research – easily and directly from your smartphone.
With the D4L Collect app, you can participate in digital studies anytime, anywhere.

Why join digital research studies?
- Take part in studies from anywhere with your smartphone or Wear OS smartwatch.
- No need to visit hospitals or clinics.
- Effortlessly collect health data in daily life.
- Enable evidence-based research by combining Patient-Reported Outcomes (PROs) with real-world data from wearables.
- Help researchers gain insights faster.

Also available for Wear OS.
A companion Wear OS app allows participants to record health data directly from their smartwatch as part of selected studies.

Your data is secure.
All information in the D4L Collect app is end-to-end encrypted and securely transmitted.

About Data4Life
Data4Life is a nonprofit digital health organization funded by the Hasso Plattner Foundation. We envision a world where health data is ready for research in the areas of public health and personalized medicine to improve prevention, diagnosis, and treatment.

Questions or feedback?
Contact us at [email protected] – we’re happy to assist!