UltraFlow

Tomasz Zuchlke Labs

About this app

UltraFlow is an adaptive coach for ultra and trail runners. Every morning it reads your watch data — HRV, sleep, resting heart rate, training load — and tells you what makes sense today: a hard stimulus, easy aerobic volume, or recovery.

TRAINING MEASURED IN WATTS
If you run with a power meter (Stryd), UltraFlow coaches you around your critical power (CP): zones, sessions and post-run analysis are computed watt by watt — heart rate is context, not the steering wheel. No power meter? You get full heart-rate-based guidance instead.

WHAT YOU GET
• Morning report — today's readiness from HRV, sleep and resting HR, judged against your personal baselines, not population tables
• Post-workout report — automatic after every run: execution vs plan, aerobic decoupling, training monotony, and tomorrow's outlook
• Adaptive plan for your race — periodization that reacts to your data instead of a fixed template
• GPX route analysis — climbs, terrain profile and a pacing plan for race day
• History with a fitness radar — km, elevation, TRIMP, sleep and acute:chronic load in one view, plus weekly trends
• Morning and evening check-ins — wellbeing, strength and mobility complete the picture
• Injury Risk Score and post-ultra tissue recovery window

WATCHES
Garmin — full integration (HRV, sleep, load; running power with Stryd). One secure connection also links Polar, Suunto, Fitbit, Withings, Oura and Whoop.

PRIVACY
Health data is processed only with your explicit consent, on EU servers. We never sell your data. You can delete your account in the app at any time.

Monthly subscription, cancel anytime. 14-day money-back guarantee on your first purchase.

What’s new

• Consent: the app now names the AI model provider, and you accept the Terms in a separate field.
• Runalyze: connect your account with a button, no token pasting.
• Garmin Connect CSV import in Settings — HRV from day one.
• Plan: "what is this session" tooltip, tick off sessions up to 3 days back, progression in km-equivalent.
• Onboarding walks you through setup.
• Planner fixes and pull-to-refresh.