#walk15 is a free walking app designed to motivate users to increase their daily steps, reduce CO2 emissions, and promote health and sustainability. Available globally in 25 languages, the app offers features like step tracking, challenges, walking routes, benefits for walking, virtual tree growth, and CO2 savings. By joining the #walk15 community, users experience a significant increase in their daily step count, fostering a healthier and more sustainable lifestyle.

The app provides various functionalities such as a pedometer for tracking steps, public and private step challenges with prizes, a steps wallet for exchanging steps for rewards, diverse walking routes with points of interest, educational messages on sustainability and health, and virtual tree growth to visualize CO2 savings.