Build the Fastest Swim Relays
in a Fraction of the Time
A mathematically optimised lineup builder and medley stroke calculator designed specifically for Masters Swim Clubs. Organize rosters, coordinate workloads, satisfy official USMS age brackets, and win more meet points.
Full-Featured Swim Optimisation
All the tools coaches and meet directors need to build official lineups without spreadsheet headaches.
24-Permutation Solver
Automatically calculates the fastest stroke allocation order for Medley relays. Compares Backstroke, Breaststroke, Butterfly, and Freestyle split speeds instantly.
Roster Workload Caps
Assign maximum relay limits for each swimmer. The engine schedules rosters logically, preventing swimmer fatigue across multiple events.
Swimmer Locking (Pins)
Freeze specific swimmers into relay slots (e.g. Donna on Backstroke leg). The builder locks their selection and recomputes other positions dynamically.
Zero Database URL Sharing
All meeting plans, rosters, and locks are serialized into a compressed Base64 URL payload. Share setups with co-coaches via copy/paste links instantly.
CSV Roster Import/Export
Upload your swimmers roster times directly using CSV templates. Keep roster backups saved locally and restore them to the app within seconds.
Direct Email Reports
Generate prefilled email draft layouts immediately. Directly email share codes to staff without hitting browser email length limit blocks.
Simple, Affordable Pricing
Start drafting relays for free, and unlock premium features for large championship meets.
Free Club Tier
For local swim teams and small dual meets.
- Manage up to 12 active swimmers
- Medley & Freestyle event solver
- Workload rule constraints
- URL Share link generation
Coach Pro Access
For meet directors and championship campaigns.
- $2 a month for hours saved
- Unlimited active roster size
- Multi-relay point estimator rules
- CSV roster importing & exports
- Print-formatted lineup PDFs
- Ad-free experience (remove all ads)