Training history you actually keep.
GrindOS logs strength, metcons, cardio, and mobility in one system. Programs you can copy. Records that are never overwritten.
Trackers lose your history. This one can't overwrite it.
Accounts close. Exports fail. An edit replaces the number you lifted with the one you typed later.
In GrindOS every record is append-only. A correction adds a row beside the original, so the original stays in the record. Charts and PRs use the corrected number.
One system for four kinds of training.
Strength
Sets, reps, load. PRs detected from the record.
Metcons
For time, AMRAP, max load. Scored and kept.
Cardio
Runs, rows, bike. Pace, splits, heart rate.
Mobility
Holds and routines, timed and logged.
Programs you can copy.
A block is a movement and a prescription. A workout is blocks in order. A day holds workouts; a program is days in sequence. Every one of them can be copied, so last month's week becomes this month's with a copy.
Programs repeat from a start date. Bring one you already follow: GrindOS imports from PDF, CSV, and calendar files.
Progress you can hold.
Every finished session earns toward your level. Badges are forged in materials, not colors: Raw, Iron, Steel, Titanium, and beyond. Levels and ranks mark the journey; badges mark the work that stays done.
Runs sync from Apple Health.
Runs recorded by Apple Health can appear in your GrindOS history next to everything else. Today that runs through a one-time Health Auto Export link; native sync ships with the iOS app.
Questions
Is it free?
Yes, during early access. Pricing comes later and the waitlist hears first.
What platforms?
Web today, installable as a PWA. An iOS app is in development.
Does it replace btwb?
For personal logging and programming, yes. No gym management.
Who owns my data?
You do. Records are append-only, so a correction adds a row and never replaces one, and you can ask for your account and data to be deleted at any time.
When does access open?
In waves to the waitlist. No date promised.
Get in early.
Access opens in waves. Free while it does.