Human coach vs AI coach.

Pick TrainingPeaks if you have (or are hiring) a human coach. The platform is built around the coach-athlete workflow: the coach plans, you execute, the coach reviews. The dashboard is excellent and the ecosystem is deep.

Pick ZoneTwoif you don’t want to hire a human coach — either because it’s too expensive, because you don’t need one for your goals, or because you want availability ZoneTwo offers (24/7 chat, automatic weekly review). We’re not trying to be TrainingPeaks without a coach. We’re trying to be the coach itself.

• Human judgement in the loop.A real coach can see technique issues, hear about a rough week at work, adjust race strategy, and hold you accountable. AI can’t match that kind of judgement yet.
• Workout builder + library.Decades of curated structured workouts from professional coaches. Our AI writes them, but doesn’t give you a library to browse.
• Device ecosystem.Structured workouts push directly to Garmin, Wahoo, Zwift. We don’t do this yet.
• Coach-client workflow tooling.If you’re coaching others, TrainingPeaks is the standard. We don’t serve coaches.
• Deep analytics for coaches. PMC customization, performance metrics, long-term planning tools.

• Price.Free during beta, a small subscription afterward. You don’t pay a coach separately.
• Availability. The AI is awake at 5am and at 11pm. Your human coach replies when they reply.
• Consistency. Every weekly review follows the same rigorous structure. Human coaches have varying care and effort week to week.
• Ground-truth safety rules. Acute spikes, monotony, cross-sport overload detected deterministically before the AI writes anything.
• Conversational follow-ups.Ask “why was today hard?” at midnight, get a grounded answer. Most coaches don’t offer that.
• Multi-sport modeling out of the box.Human coaches often specialize in one sport; cross-sport load modeling isn’t always their bread and butter.

• Elite amateur, $10k race budget, trying for Kona or a national podium? Hire a human coach, use TrainingPeaks. No AI is worth risking your peak year.
• Amateur with a sub-3 marathon goal, training 5–8h/wk, can’t justify $300/mo? Try ZoneTwo first. Hire a human only if the AI plateaus you.
• Returning from injury, need data-driven structure? ZoneTwo. Our rule engine is conservative and will not push through warning signs.
• Triathlete with all three sports, no personal coach? ZoneTwo — multi-sport modeling is core, not an afterthought.
• Training two people or a team? TrainingPeaks — we don’t serve coaches.