AI endurance coaching in WhatsApp. No new app. No dashboard. Your coach is already in your pocket.
5 min easy warm-up, then 20 min at Z3. Hold pace — don't push into Z4 today. Your legs are carrying fatigue from Tuesday.
The coaching relationship lives inside the channel you already open thirty times a day.
Other tools compete for a slot in your attention. Zelos lives in the chat thread you open before breakfast.
Every layer of Zelos is a named system — built to compound, not to entertain.
Not a mascot. Not a chatbot. A coach — with a defined persona, defined boundaries, and a jaw set for work.
Running-first at launch. Cycling and swimming added at Elite as the platform matures.
Weekly protocol delivered via WhatsApp. Manual session logging by reply. No AI adaptation.
Daily WhatsApp coaching. Adaptive AI adjusts protocol based on session feedback. Zelos Index tracking.
Full multi-sport support: running, cycling, and swimming. Advanced periodisation. Wearable integrations.
No. Zelos is a training education and structure tool. Any question about injury, nutrition, or health is redirected to qualified professionals. The protocol adjusts once you have clearance from them.
No. The coaching relationship lives entirely in WhatsApp. You provision your coach with a phone number — the first brief arrives within 24 hours.
At launch: running, on the Starter and Operator tiers. Cycling and swimming are supported on the Elite tier, including multi-sport periodisation for triathletes.
Each reported session feeds three signals: compliance with pace/zone targets, perceived effort, and recovery trajectory. The engine reweights next week's protocol — more volume, less intensity, a rest day added — without asking you to decide.
Zelos is Europe-born and GDPR-aligned by default. Your training history belongs to you; export as CSV or JSON at any time. We never sell data.
Yes. Cancel by replying STOP in WhatsApp. No retention calls, no dark patterns. Your Zelos Stack stays exportable for 90 days afterward.