MathFluent wins Rep. Lou Correa’s 2025 Congressional App Challenge in California’s 46th District

Rep. Lou Correa has named Xiong Yi of Fairmont Prep Academy as the winner of the 2025 Congressional App Challenge in California’s 46th District. Their app MathFluent is a learning app designed to help students develop true mathematical thinking, not just solve equations.

When asked what inspired the creation of MathFluent, Xiong Yi said, “The idea for Math Fluent came from a personal realization: many students can solve math problems, but they don’t always understand why their solutions work. I used to be one of those students. I could follow steps, memorize methods, and get the right answers—but I didn’t always grasp the deeper meaning or logic.

“Everything changed when I began questioning the purpose of each step. Instead of rushing to the answer, I practiced asking myself what the problem was teaching, whether my logic made sense, and how I could explain it clearly. My approach didn’t just improve my performance; it made math enjoyable, empowering, and intellectually satisfying.

“Once I experienced that shift, I noticed how many classmates still relied on memorization or external help, especially with new AI tools available. Students could ‘get the answer,’ but they often missed the chance to develop reasoning and confidence. I realized this wasn’t a math problem—it was a thinking problem.

“That insight inspired Math Fluent. I wanted to create a tool that trains students to think like mathematicians: curious, analytical, expressive, and independent. Math is a language, and fluency in that language comes from understanding, not pattern-recall. Building this app lets me help others build that skill early, rather than discovering it later by chance. 

“I created this app because I believe every student is capable of deep thinking when given the right guidance. When students learn why math works, the subject becomes exciting, not intimidating. It becomes a tool for life—for engineering, physics, problem-solving, innovation, and even everyday decisions. My love for math naturally expanded into physics, a field where reasoning, creativity, and logic collide with the laws of the universe. I am honored to have placed 8th internationally and 5th in the U.S. regionally in Physics Bowl, and I serve as President of my school’s Physics Club and Physics Team. Teaching others and building academic communities strengthened my desire to create solutions that help learners everywhere.

“Math Fluent is more than an app—it’s a mission. I want students to feel empowered, capable, and fluent in their thinking. I hope this tool inspires confidence and unlocks the joy that comes from truly understanding math.”

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.