Seismic Toss.
Local-first training
Training should keep working without making an account the first exercise.
Progress that stays yours.
The problem
A training product has to preserve the record of real effort. Network failures, sign-in friction, and disconnected program histories should not get between a person and the next set.
What we built
Seismic Toss is a free training companion for guided strength, calisthenics, custom programs, and BJJ sessions. A shared planner and history connect the week. An account is never required to train.
The engineering
The schema-versioned local record remains authoritative. Export and validated import give the user a recovery path; optional Google-backed backup adds another. Independent program progression keeps the next workout tied to the work actually completed.
- Local record remains authoritative
- Training without sign-in
- Export, validated import, and optional backup
- Independent progression in a shared history
The boundary
BJJLifts remains an internal compatibility name. Seismic Toss is the public product name. The screenshot uses an empty local browser with demonstration setup, not a real person’s training history.