HeartAngel wins Rep. Mike Levin’s 2025 Congressional App Challenge in California’s 49th District

Rep. Mike Levin has named Weiting Wang of St. Margaret’s Episcopal School as the winner of the 2025 Congressional App Challenge in California’s 49th District. Their app HeartAngel is an innovative CPR training and emergency response app designed to guide users in both learning and performing life-saving techniques.

When asked what inspired the creation of HeartAngel, Weiting Wang said, “The inspiration for creating HeartAngel originates from a deeply personal and urgent recognition of how critical timely and high-quality CPR can be in saving lives. While observing the challenges faced during cardiac emergencies, I realized that many lives are lost not because people lack the willingness to help, but because they lack immediate knowledge, guidance, or access to life-saving tools. Other times, life-saving measures are ineffective because compressions are either inaccurate or inefficient. It’s hard to control the compression rate to just about 100-120 compressions per minute and just about 5-6 centimeters deep. That’s why most of the time, lives slip away because of inaccuracy, inefficiency, and the failure to provide high-quality CPR. Witnessing these dilemmas sparked the idea of creating an app—HeartAngel—that could empower anyone, whether a novice or a trained individual, to act confidently in emergencies and increase the rate of successful cardiac rescue.

“HeartAngel was born from the desire to spread knowledge regarding CPR and applying it effectively when every second counts. I saw that traditional CPR training often provides only sporadic opportunities to practice, leaving individuals unprepared when real emergencies occur. Additionally, even trained responders may face difficulty locating nearby AEDs or summoning help quickly, which can dramatically reduce survival chances. These challenges highlighted the need for a solution that combines practice, real-time guidance, connected assistance, and AED accessibility in a single, user-friendly platform.

“Thus, with the goal to connect the community and make CPR learning easier for new users, HeartAngel aims to be an app that not only improves CPR skills but also fosters confidence and collaboration in emergencies. HeartAngel represents more than just technology; it embodies a vision of a world where timely action is always possible, where ordinary people are empowered to make extraordinary differences. By creating an app that combines the community, allows users to develop fundamental CPR knowledge, and provides a useful tool during a real-life emergency, HeartAngel directly combats the devastating effects of cardiac arrest.

“Ultimately, the app is inspired by the human stories behind cardiac emergencies, whether it be the moments when knowledge, timing, and support can mean the difference between life and death. That’s what inspired me to create my slogan: ‘Time is Life. HeartAngel—giving life another chance!’”

The 2025 Congressional App Challenge marked another record-setting year for the program. A total of 394 Members of the U.S. House of Representatives hosted App Challenges in their congressional districts, the highest level of participation in the program’s history. More than 13,800 students from across the country participated, submitting over 4,600 original apps focused on real-world challenges ranging from health and accessibility to education, sustainability, and civic engagement.

The Congressional App Challenge is an official initiative of the U.S. House of Representatives that encourages middle school and high school students to learn to code, explore computer science, and build practical technology solutions for their communities. Each participating Member of Congress selects a winning app from their district, and winning teams are invited to showcase their projects to Members of Congress, staff, and industry leaders at the annual #HouseOfCode celebration on Capitol Hill.

The Challenge is proudly bipartisan and reflects a shared commitment to expanding access to STEM education and preparing the next generation of American innovators for the future workforce. The program is a public-private partnership made possible through funding from the Broadcom Foundation, AWS, Infosys Foundation USA, theCoderSchool, Apple, and others.

The 2026 Congressional App Challenge will launch in May, and eligible students can pre-register for the competition now.