Athletes do not open a spreadsheet. They open Gridlines, see today's session at the top, and log it set by set. Every rep flows back to the builder you wrote it in.

The app opens on today's session, ready to start. The Plan tab holds everything else: programs running, paused, or waiting, and the programming ahead.

Tap a cell and the keypad docks. Next walks the fields, the check completes the set, and the next one pre-fills from the last. The rest timer opens itself.
The coach writes 72%. The athlete sees the bar weight. Every percent prescription resolves against a tested max, and updating one max recomputes everything ahead.

Every saved session lands in Activity: a ledger you can reread and correct, and widgets that turn it into volume, consistency, and per-lift trends.

Your coach's community lives in the app: spaces, posts, and polls, with the one thing other feeds cannot do, a training session attached as proof. Coach messages land in the same pocket.
