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FairPlay Lab

Fair substitutions, squad insights, and athlete wellbeing — with every reason shown.

Built on sports science, not algorithms. For middle & high school soccer.

Download on the App Store

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See It In Action

Every recommendation comes with a transparent Why card — so coaches, players, and parents stay in the loop.

Our Mission

Every player deserves a fair shot — and every decision deserves a clear reason.

FairPlay Lab turns training data into transparent recommendations that coaches can stand behind, players can understand, and parents can trust. No black boxes. No guesswork. Just published sports science, shown openly every time.

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For Coaches
Build rosters, track attendance and match minutes, log pitch events, and get minute-range recommendations with attached reasoning.
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For Players
Join with a team code, see your recommended minutes and exactly why, log sessions, and find the one change that reduces your weekly strain.
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Built on Science
Session-RPE, acute-to-chronic workload ratio, and standard fairness measures — arithmetic you can verify, not AI you have to trust.

Meet the Founder

Ying Yee Yu

Ying Yee Yu

Student Entrepreneur & App Developer

A high school student entrepreneur who believes technology should make sport fairer and more transparent for every athlete. Ying Yee built FairPlay Lab to give coaches the tools to make informed, explainable decisions — and to give players the confidence that they're being seen. Driven by a passion for sports science and ethical software, she turned a real problem into a real solution.

Available Now

Ready to Play
Fair?

Join coaches and student-athletes already using FairPlay Lab to make every substitution decision transparent, fair, and grounded in sports science.

Free on the App Store
Download on the App Store