Spreadsheets that actually understand coaching.
The grid you already program in, built around sets, percentages, and training weeks. Gridlines puts it on every athlete's phone and brings the training back. AI works beside you, and you review every change.
Not a coach? I am an athlete
The spreadsheet was never the problem.
It's everything around it — the copies, the PDFs, the screenshots, the rebuilds. Gridlines removes them, and shapes the sheet itself around programming — not everything Excel has to be.
Built for coaches who program in numbers — strength & conditioning staff, track and field coaches across sprints, jumps, throws, and distance, weightlifting and powerlifting coaches, and online coaches running dozens of athletes at once.
Keep the speed and freedom of a spreadsheet. Add athlete delivery, monitoring, and AI without rebuilding the program in another tool.
Built by software engineers with 10+ years at companies like Apple, working side by side with Olympic-level coaches.
The busywork's been a given. Now it's gone.
The percent math, the first draft, the website, the payment chasing — Gridlines takes the jobs that never needed a coach.
Write 80% once — every athlete sees their own weight in the app, and completed sets come back as intensity you can track.
Ask the Agent beside the grid, or connect Claude or any MCP assistant. It edits the program you wrote, and every change is attributed and undoable.
Publish a finished program — one-off or all-access — to a page buyers land on from any link you share. No website to maintain, nothing to embed.
Stripe Connect settles sales straight to your bank. Keep 100% of every sale on a plan; 5% goes to Gridlines without one.
The program goes out. The training comes back.
Programs go straight from the builder to the athlete app.
The program lands on every athlete's phone, today-first. They log as they lift — and every rep is back in your builder the moment the bar goes down.
More on the athlete appKnow how every athlete is actually training.
Top set and volume by exercise, maxes that stay current, and prescribed versus performed for every session — built from logged sets, not from what athletes remember.
More on athlete monitoringThe conversation stays next to the training.
See a flat week and message the athlete about that week — DMs and team communities sit beside the roster and the logs. No group-text sprawl, no second app.
More on coachingBuilt for the full performance program.
Program at the level you coach at.
Free to build. Sell it when it's ready.
Training with a coach? Your program lives in the athlete app.