The operating system
for running a program.
Six modules. One login. One source of truth. SidelineOS is built for the youth and high school operator who's running a real program — and is tired of stitching together five SaaS tools that don't talk to each other.
Program Health · NYF
LIVE · 6 DIVISIONS · 1,340 ATHLETESRunning a program shouldn't
require five SaaS tools.
Most youth and HS operators are stitching together TeamSnap + a Google Sheet + GroupMe + a paper bracket + a clipboard. Nothing talks to anything else.
Nothing connects
Roster lives in one app. Schedule in another. Equipment on a spreadsheet. Comms in GroupMe. Scores on paper. The "system" is the operator's memory — and that's the failure point.
"Who has what?" is unanswerable
"Did this kid pay?" "Is he on the right roster?" "Did he ever get a helmet?" "Was he at practice?" Five tools means five answers — and the operator does the reconciliation manually, every week.
Admin burns the season
The operator's job is the program. The tools' job is the paperwork. When the tools push paperwork back onto the operator, the operator is doing two jobs — and one of them is the wrong one.
An OS, not an app.
SidelineOS isn't an app with feature creep. It's a platform — one login, one data layer, six purpose-built modules that share state.
Athletes are athletes.
Across every module.
When a new athlete registers in Roster, they're in Locker, on the Schedule, eligible to be scored in Score, and reachable in Comms. No duplicate data entry. No reconciliation. No drift.
- One athlete record across the entire OS
- Eligibility status syncs to gear issuance, game day, and reporting
- Multi-season history per athlete — built in from day one
- Multi-sport portability for the AD running a whole program
Pressure-tested
before it ships.
Every workflow in SidelineOS was built to solve a problem the founder had on a Saturday — at a real program, with 1,340 real athletes. That's the design pressure SaaS tools don't have.
- Locker built after losing $4,800 in helmets one season
- Score deployed live at NYF May Madness 2026 — with referees
- Schedule's tiebreaker engine: 8 tiers, 2,600+ audit checks
- Roster's weight-tier logic: TYSA-compliant, enforced at registration
Start small.
Add as you go.
You don't have to migrate your whole program on day one. Start with Locker. Add Roster when registration season hits. Turn on Score when you're running playoffs. Your data follows you.
- Modules sold individually or bundled — your choice
- No rip-and-replace — keep your existing tools running alongside
- Bundle pricing locks in your rate before the suite is complete
- Module-to-module data hand-offs are automatic when both are on
Six modules. One operating system.
SidelineOS is modular. Start with what you need. Add the rest as we ship them. Your account scales, your data stays.
Locker
Track every piece of gear, tie it to an athlete, run check-in/check-out from your phone.
Roster
Registration, weight-tier eligibility, division placement, full athlete history across seasons.
Schedule
Field allocation, practice blocking, tournament brackets, and game-day scheduling.
Score
Field-number login, scoreboard sync, whistle and horn audio, halftime countdown, crash recovery.
Comms
Targeted messaging by team, division, or full league. Built for the operator tired of GroupMe sprawl.
Field
Field availability, conflict detection, weather cancellation flow, and facility partnership management.
Built in the field.
Not the office.
SidelineOS isn't a thesis. It's a tool I needed. I run a 1,340-athlete program across six divisions. Every module on this page started as a workflow I had to solve before Saturday. The fact that other operators need the same thing is the business — but the design pressure came from the field, not a focus group.
Numbers a competitor can't fake.
SidelineOS runs daily inside an active program. Here's what that program looks like.
Run your program on an OS.
Start with Locker. Add modules as we ship them. Your data stays. Your account scales. Built by an operator who's running a 1,340-athlete program — not a startup pitching one.