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Personalized training: skill development, a practice plan built for you, and individualized feedback after every session.
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Coaching · Analytics · App
Data-drivensportscoaching.
Personal coaching for young athletes, built on the numbers that actually move performance, from the field to your phone.
PlayBetter by the numbers
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MLB pitchers analyzed
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Years of data
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Sports supported
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Keypoints tracked per rep
- Exit velocity
- Bat speed
- Release angle
- Ground contact
- HRV
- Sleep
- Workload
- Launch angle
- Spin rate
- Sprint speed
- Readiness
- Strain
- Pop time
- Arm slot
- Recovery
How it works
Three steps. Measured every week.
Coaching that starts with data instead of guesses, and keeps checking the numbers as you train.
Baseline
Step 01: Assess
We track your performance data and establish a baseline: movement mechanics, speed, body movement, and how you recover between sessions.
Custom program
Step 02: Plan
A custom training program for each player, built from what the numbers say about you. Not a template, not a group drill sheet.
Real-time analytics
Step 03: Train & Measure
Hands-on sessions guided by real-time analytics, so every rep is measured and every week shows where you moved.
Coaching
On the field with Cooper.
Three ways to work together, all built on the same idea: know your numbers, then train what they tell you.
The platform
The coaching, in your pocket.
Everything from a session with Cooper lives in the app between sessions: the recovery check, the movement score, and the plan.
Readiness
Know how ready you are today.
Sleep, HRV, and strain from WHOOP roll into one daily readiness score, and the plan for the day is written around it.
- Connects to WHOOP in one tap
- A daily plan that adapts to recovery
- Streaks and week-over-week trends
Motion analysis
Film a rep, get a score.
Point a phone camera at a swing, shot, stride, or serve and PlayBetter draws a 17-keypoint skeleton over it, then grades the movement across 8 categories.
- 17-keypoint skeleton from a phone camera
- Scored across 8 movement categories
- Drills matched to your lowest score
Your video stays on your device. Only the scores are saved.
Team
Your whole team, one screen.
Leaderboards, game recaps, and progress updates that parents actually read. Built for 8 sports, so a coach with two rosters keeps one login.
- Team leaderboards that update after every game
- Game recaps to share with families
- 8 sports, one roster view
Built for teams
From sign-up to full roster in a minute.
Coach creates a team
Name it, pick the sport, and the roster, calendar, and lineups are ready.
Share the invite code
Every team gets a 6-character code to text or post in the group chat.
Athletes join in one tap
They enter the code and land on the roster. Coaches only see athletes on their teams.
Team analytics
Pro analytics for every team.
Upload your GameChanger export and get a professional dashboard instantly. Track player performance, see progress over time, find the areas to work on, and share updates with the people who care.
Research
Research-backed.
Cooper studied 428 MLB pitchers before and after Tommy John surgery, ten seasons of Statcast, Baseball Savant, and Lahman data, analyzed in Python. The same rigor goes into every player's plan.
- Dataset
- 428 pitchers
- Sources
- Statcast · Savant · Lahman
- Toolset
- Python · 10 years
<100%
Velocity
Comes back, but not all the way.
Year 2
Workload
Fully recovered by the second season.
Starts ↓
Role
Teams still start them less often.
Sinkers ↓
Arsenal
Sinker usage drops after surgery.
New · October 2026
Arm care for every pitcher.
Most youth pitchers don’t have an athletic trainer counting for them. PlayBetter now tracks pitch counts and rest days so coaches and parents know who can safely pitch today.
Log every outing
Enter each pitcher’s count after the game. Same-day outings add together.
Rest days, worked out
Daily limits and required rest follow MLB and USA Baseball Pitch Smart guidelines for ages 7 to 18.
Arm pain holds them out
A reported sore arm keeps a pitcher off the list until a coach clears them.
About
Who's Cooper?
Cooper Won is a student-athlete and sports analytics researcher. He founded PlayBetter to bring the tools that pro organizations use, tracked data, custom programs, and honest measurement, to young players who are still figuring out what kind of athlete they want to be.
“Helping young athletes understand not just how they are playing, but how they can improve.”
Pricing
Simple plans for athletes and teams.
Free while PlayBetter is in beta. No card needed.
Athlete
BetaFor one athlete who wants to measure and improve.
Free
- Motion analysis from a phone camera
- Progress history for every score
- Lessons and games
- A daily plan
Team
For a coach and a roster.
Contact us
- Team calendar for games and practices
- Roster with invite code
- Lineups
- Game stats
- Athlete readiness
Academy
For clubs and academies with more than one team.
Contact us
- Everything in Team
- Multiple teams
- Multiple coaches
- One place to see every roster
FAQ
Questions, answered.
The things every parent and player asks first.
No. Programs are built case by case for every skill level, from a first travel-ball season to a varsity roster. The baseline assessment decides where we start.
Rooted in strategy
Ready to change the game?
Log your games for free, no account needed, or write to Cooper about coaching for you or your team.