An AI coach that actually reads your log.
Most fitness apps glue an LLM to a generic workout template. Ascend's coach reads every set, sleep score, soreness flag, and meal you've logged in the last 90 days — then proposes the next move, set-by-set.
How it works
- Claude Sonnet 4.6 handles reasoning + chat. We pipe your context (lifts, RPEs, sleep, soreness, goals) into every message.
- On-device small model picks next-set weight + reps in sub-100ms — no network needed mid-lift.
- Propose-action tool use means the coach can offer to update programs, log lifts, or schedule a deload. You accept, edit, or reject. Acceptance rate trains the next call.
- Embeddings-backed home priorities re-rank what shows on /home based on what you actually engage with.
What the coach can do
- Pick your next-set weight from RPE history
- Project PR + bodyweight at 4/8/12 weeks
- Mid-set voice commands ("100 by 8 RPE 8")
- Adaptive Sunday macro rebalance
- Auto-schedule deload weeks from readiness
- Pantry-aware recipe matches
- Chat with 90-day session memory
- Cite which lift / week the recommendation came from
Privacy
Coach calls go through Ascend's backend with PII (name, email, exact location) stripped before reaching Anthropic's API. Logs are deletable in one tap. Voice runs on-device.
Plug your training into Claude
14-day Club trial. AI coach on all paid tiers.
Join waitlistRead more about the implementation in our blog: AI coach character design.