Guides
Science-based cycling coach that shows its work
Explainable AI cycling coach for self-coached riders: a deterministic science engine owns Fitness, Form, and load; constrained AI narrates — every call stays interrogable.
Science-based
The engine owns Fitness, Form, and load
Here “science-based” is not a gym SERP slogan. It means a deterministic sports-science core computes the numbers — Fitness, Form, zones, fueling bands, readiness, and load — and the language layer is not allowed to invent watts or readiness scores.
Bike Form stays Coggan TSB. Run and swim can show sport-aware load and per-sport Form on the coach desk; that is desk honesty, not a claim that bike Today Form is Banister. For the athlete-facing stance and the public methods list, see science stance and the methods note. We cite shipped engine language only — no invented formulas or papers on this page (ADR-0007).
Explainable AI
Ask why. Get engine citations.
“Explainable” means every recommendation can be asked why — and the answer points at engine state (readiness, TSB, CTL, compliance, time in zones), not a fluent guess bolted onto analytics.
Chat is not the coach. Constrained AI narrates what the engine already computed. That split — and why black-box coaching fails serious riders — is the job of why every recommendation has to show its work.
Cycling wedge
Cyclists first — honest about scope
This page is the product category pitch for a science-based / explainable AI cycling coach. Cycling is the wedge. Run and swim load may appear on Today and the calendar in the same coach shell — that is not a triathlon coach, Ironman planner, or race-week triathlon product, and it is not coaching parity with the bike.
Whoop-class wearables are an input when you bring wellness in — not the product we are selling. Koyaro is the coach loop that cites the engine, not a readiness ritual rebranded as coaching.
One loop
Train → fuel → recover → race
Science without a loop is a dashboard. Koyaro keeps training, fueling, recovery, and race prep in one inspectable system — missed sessions and readiness rewrite the week without leaving the engine you can cite.
The loop thesis lives in how the loop works.
vs the category
Not CRM. Not analytics + chat.
TrainingPeaks-class coach CRM, intervals.icu analytics, and Whoop-class readiness each solve a slice. Koyaro is a different bet: engine decides, AI explains, whole-athlete loop. The full compare — including hard nos to “TP for €15,” “Intervals + ChatGPT,” and Whoop-as-hero — is Koyaro vs TrainingPeaks, intervals.icu, and Whoop-class. This page does not duplicate that frame.
Anti-claims
What this page refuses to claim
Not a gym / hypertrophy “science-based training app.” We are not chasing that SERP. This is a cycling coach with an engine you can interrogate.
Not a triathlon coach. No Ironman product, no race-week triathlon planner, no fake combined TSS or blended “triathlon fitness” CTL. Per-sport Form stays honest; bike Form remains Coggan TSB.
Not chat-first. Not Intervals + ChatGPT. Fluency is not physiology — the LLM narrates engine numbers; it does not invent metrics.
Ready when there’s a seat.
Closed beta · We’ll invite you when there’s room · from €15/mo. When you’re invited, interrogate the first daily call — that is the demo.