Train harder on the right days.Recover smarter on the rest.
Overtraining doesn’t announce itself. It builds slowly — through fatigue, poor fueling, and ignored signals. DARS gives you a daily readiness score before a bad week becomes a lost month.
For endurance athletes who train on data, not hope.
14-day free trial · $9.99/month · Cancel anytime
Today's Readiness
Train with Caution
Who it's for
Runners
Marathon, ultra, track — know exactly when to push and when to protect.
Cyclists
Road, gravel, MTB — manage load across long training blocks without burning out.
Triathletes
Three disciplines. One readiness score. Zero guesswork.
Swimmers
High volume without recovery is just injury in slow motion. DARS keeps you ahead of it.
How it works
From a sub-minute check-in to a confident training decision
Check in each morning
Answer a short set of questions about sleep, energy, mood, and training load. Under a minute — no excuses.
DARS calculates your score
Your answers, combined with objective data from Oura, Whoop, and Strava, produce a 0–100 readiness score across five evidence-based domains.
Get a clear recommendation
Ready, Caution, Reduce, or Rest — no ambiguity. Track trends over time to identify RED-S risk indicators early. DARS is a wellness tool, not a diagnostic instrument — always consult a healthcare provider for medical decisions.
Features
Built for athletes who refuse to guess
RED-S indicator tracking
DARS monitors D5 indicators daily and surfaces trends after 7+ consecutive days of low-protection patterns — giving you and your provider early visibility.
Five-domain scoring
Training load, recovery, sleep, fueling, and RED-S protection combined into one daily readiness number — grounded in sports science.
Menstrual cycle tracking
Phase-aware scoring adjusts D2 for natural HRV shifts in the luteal phase and surfaces amenorrhea as a RED-S indicator. Logged from your daily check-in — private and instant.
AI workout suggestions
Each morning, DARS suggests a single workout sized to your sub-scores. When RED-S protection or fueling drops below evidence-based thresholds, the AI suggests easier sessions instead of intensity. AI suggests, you decide.
Recovery Mode pathway library
For injuries and rehab, DARS swaps daily readiness for a phase-aware pathway library. Body and head check-ins. Your ATC or PT can author custom cards. Designed to support — not replace — your healthcare provider.
Learn more about Recovery Mode →Oura Ring integration
HRV and resting heart rate sync automatically each morning so your recovery score is objective, not estimated.
Whoop integration
Whoop strap data — HRV, sleep, and recovery — syncs automatically. Pick Whoop or Oura as your primary wearable in Settings.
Strava integration
Connect Strava and your training load is pulled from your activity data automatically — no manual entry needed.
Direct coach messaging
Athletes and coaches message each other directly — iMessage-style threads with read receipts and real-time delivery. No external app needed.
What's new
DARS now suggests, too.
Your readiness score used to tell you what your day looked like. Now it tells you what to do with it — sized to your sub-scores, gated by evidence-based thresholds.
For athletes
DARS reads five domains — including RED-S protection and energy availability — and adjusts what we recommend based on what you're showing. When sub-domains drop below evidence-based thresholds, DARS suggests easier sessions instead of intensity. When you're in Recovery Mode, DARS steps back entirely and respects the pathway your PT or ATC set up. The athlete always decides.
For coaches
Upload your athlete's training plan. DARS overlays each session with actual readiness data. Where intensity and readiness don't align — a hard workout when the data says back off — Claude Sonnet flags it and suggests what to adjust. You always decide. The AI never auto-applies. The AI never increases planned load.
When everything's green
Ready to Train
AI suggests
Intervals · 50 min · Z5
5×4 min at VO2 max effort, RPE 8
When D5 drops below 4
RED-S protection alert
AI suggests
Easy · 45 min · Z2
RED-S protection sub-score is below 4 — keeping intensity conservative.
AI suggests, you decide. Never auto-applies. Never overrides Recovery Mode. → Read the full disclosure
Anthropic processes only computed scores under a Data Processing Agreement; no name, email, or contact information is transmitted.
For coaches
Your whole roster. One dashboard.
When athletes track their own readiness, coaches get the signal they need. Every athlete's daily DARS score, RED-S risk flag, and 7-day trend arrives on your dashboard each morning — because athletes chose to share it. Coaches see scores and trends by default; during injury recovery, athletes can opt in to share daily values with their coach for closer monitoring.
RED-S indicators surface automatically
See which athletes are trending toward risk indicators. Domain scores and trends help inform your coaching decisions — always in partnership with the athlete and their healthcare provider.
Direct messaging with every athlete
Real-time iMessage-style threads with each athlete — send encouragement, ask about a low score, or flag a concern. Read receipts included.
Notes & quick-template chips
Leave a daily note with one tap using built-in templates — "Push today", "Rest day", "Fuel up", and more. Athletes see it instantly on their dashboard.
7-day trend per athlete
Sparkline trends reveal who is building capacity and who is accumulating fatigue. Pattern recognition at a glance.
Invite link onboarding
Share one link. Athletes join, set up their profile, and start tracking readiness. Scores flow to your dashboard from day one.
Coaching an athletic department, sports program, or institution? See team plans →
Coach roster · today
2 unread DMsThe science
Built around RED-S awareness
RED-S doesn't announce itself. It builds gradually through sustained fatigue, low mood, high perceived effort, and suppressed appetite — long before a stress fracture or missed period makes it obvious. World Athletics and the UCI now mandate RED-S screening. DARS tracks the daily indicators that help you and your healthcare provider identify risk early. DARS is a wellness tool, not a diagnostic instrument.
of endurance athletes train while already fatigued or under-recovered
of running injuries are overuse-related — and entirely preventable
competitive female athletes show RED-S indicators (IOC 2023)
Science-validated methodology
DARS is validated against the IOC 2023 RED-S Consensus Statement, LEAF-Q, BEDA-Q, and FRHQ screening instruments — the same frameworks used in elite sport and clinical research. D5 hard-override floors prevent athletes from training through RED-S or acute illness.
Why this exists
Built by an athlete who learned the hard way.
“I was eight weeks from the Boston Marathon — chasing sub-3 — when a femoral stress fracture ended my season. No warning. No signal. Months of damage I couldn't see.
I built EnduraX to make sure the data speaks before your body breaks.”
Rose Hall
Founder & CEO
Pricing
One price. No surprises.
14-day free trial on every plan. No credit card required to start.
No charge for 14 days. Cancel anytime.
Privacy & data
Your health data stays yours.
EnduraX handles menstrual cycle data, HRV, hormonal signals, and RED-S indicators. We treat that with the seriousness it deserves.
Sensitive data stays sensitive
Menstrual, hormonal, and health data is classified at the highest tier of sensitivity. It is never sold, never shared with third parties, and never used for advertising.
Delete anytime
Cancel your account and all your data is permanently deleted. No retention periods, no backup exceptions. Your data disappears when you ask it to.
Encrypted at rest and in transit
All data is encrypted in transit via TLS and at rest. Wearable tokens (Oura, Strava) are stored encrypted and refreshed automatically.
Full details in our Privacy Policy and Terms of Service.
EnduraX is a wellness and performance-tracking tool. It is not a medical device and does not diagnose, treat, or prevent any condition. Always consult a qualified healthcare provider for medical advice.
FAQ
Questions, answered
Be first to know what's next
Garmin integration, iOS app, and AI coaching insights are on the roadmap. Drop your email and you'll hear first.
Stop guessing. Start training with purpose.
14-day free trial. Then $9.99/month. Cancel anytime.
Under a minute every morning. The signal your training has been missing.
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