Personal app Local-first workout logger
A workout app that keeps results honest
My own training app: an AI coach writes each session, I log what I actually did on my phone, and the coach plans the next session from those results. Below is the real app, running with a fictional athlete.
Try this
- Complete the readiness check, then Start workout.
- Open a block, enter reps, and check a set — or use Same as last set · complete. Suggested weights stay suggestions until a set is checked.
- The session's reps-in-reserve target sits under the title; progress and Saved on device update as you go.
- Open History, then Reset demo in the yellow bar.
The problem it solves
- A suggested weight must never be mistaken for what was actually lifted.
- Logging has to be quick mid-workout, on a phone, without signal — every change is saved on the device as it happens.
- A finished session is history: read-only, exportable as JSON or Markdown, never rewritten.
My part
I defined the workflow and the rules — what counts as done, what a suggestion is, what must never be overwritten — and directed AI coding assistants to build and test it, alongside a written coaching memory any assistant reads first.
What's real, and what's different in this demo
- Real: the app's own interface and logic (React and TypeScript), saving to on-device storage, the readiness gate, suggested-versus-confirmed loads, optional work, finish checks, history and exports.
- Different: a fictional athlete and session; demo storage kept separate from any real records; sync to the coach's repository and offline installation turned off; a few readiness labels made generic for privacy.
- Reps in reserve is a session target in this app, not a per-set entry.