kilorep

A workout log fast enough to use between sets.

Android and web. I wrote it to replace the Google Sheet I used to fill in mid-workout.

Or run your own server. The README covers NixOS and plain Node.

Kilorep: the Progress page on a wide screen, weekly tonnage, records and estimated 1RM Kilorep: a workout in progress on a phone, with the rest timer
Fast
One tap logs a set. Every set shows last time's weight and reps, and logging it starts the rest timer.
Offline
A whole workout runs with no signal and no account. Sign in to a server only when you want sync.
Yours
MIT open source, with a JSON or CSV export of everything. Sync through kilorep.com or your own server, and let an agent read and log your training over MCP.