For Ironman & 70.3 Triathletes
Your training plan doesn't know you slept five hours. Cue does. Every morning it reads your body — holding you back when you need it, pushing you harder when you're ready. Every session exactly right for how you feel today.
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Free during beta · No credit card required
Tempo run scaled to Zone 2. Your body needs another 24h to recover from Sunday's long ride.
Apps like Runna give you a structured plan. But a plan is static. It doesn't know if your HRV dropped overnight, if you're carrying fatigue from last week, or if today you're actually ready to break through.
You're either holding back when you should push — or pushing when your body needed rest. Both cost you performance.
Tuesday: 8km tempo run.
Your HRV is 30% below baseline. You slept 5 hours. The plan doesn't care. You either gut it out or skip it and fall behind.
Tuesday: Easy 6km, Zone 2.
Your body flagged low readiness. Cue swapped the session automatically and explains why. You recover. Wednesday you're sharp.
Saturday: Long ride, moderate effort.
Your readiness is at 94. The plan keeps you at 70% — you leave performance on the table.
Saturday: Long ride, push it.
HRV, sleep, RHR all green. Cue flags a high-readiness day. You train to your ceiling when it matters most.
Every morning, Cue reads your body and tells you exactly what to do — and why.
Cue reads your HRV, resting heart rate and sleep quality from your Garmin or Apple Watch. No manual input needed — it's ready before you are.
Three quick questions about how you feel. Combined with your biometrics, this gives Cue a complete readiness picture — physical and mental.
Cue runs the plan, dials down intensity, or swaps the session for active recovery — with a clear explanation of the reasoning behind every decision.
Generic HR zones are calculated for an average body. Yours isn't average. Lactate calibration tests set your exact training zones based on your physiology — and update them as you get fitter.
Built around your A-race with structured periodization, peak weeks, taper and recovery blocks. The season adapts as your fitness evolves — not a static 20-week PDF.
Based on six months of your training data, your lactate profile and race-day conditions, Cue generates a precise pacing and HR-zone plan for swim, bike and run.
Cue tracks your training load over time and flags when injury risk is climbing — then adjusts the plan before you break down, not after.
Every training platform assigns you heart rate zones. Most use the same formula: subtract your age from 220. That's it. It doesn't account for your actual physiology.
Two athletes with identical resting heart rates can have completely different lactate thresholds. Training at the wrong zones means you're either not working hard enough — or working yourself into the ground without knowing it.
Cue's lactate calibration test maps your personal threshold zones through a structured ramp protocol. The result is fed directly into your training plan, so every intensity target is calibrated to your body, not a formula.
Structured ramp test
A guided progressive effort on your bike or run. Cue walks you through every stage with real-time pacing cues.
HR & pace analysis
Cue analyses your HR response, pace and perceived effort across each stage to identify your true threshold.
Zones applied to your plan
Your five personal zones are set and locked into every session in your plan. Re-tested every 6–8 weeks as you get fitter.
Separate zones per discipline
Your run threshold is not your bike threshold. Cue calibrates independently for each discipline.
Your Personal Zone Profile
Example output from a calibration test
Most injuries don't happen suddenly. They build up over weeks of accumulating load. Cue tracks the warning signs and adjusts your plan before you ever feel it.
Run volume was trending 18% above safe limits. Cue reduced next week's load by 12% automatically — before you felt it. You stayed in the green.
Acute:Chronic workload ratio
Cue tracks the ratio between your recent training load and your longer-term fitness base. When short-term load spikes beyond what your body has adapted to, injury risk climbs — and Cue adjusts before it becomes a problem.
Volume escalation monitoring
The 10% weekly volume rule exists for a reason. Cue enforces it automatically across all three disciplines, flagging when your plan is building faster than your body can safely handle.
Hard day stacking detection
Back-to-back intensity is one of the most common causes of overuse injury. Cue detects when hard sessions are stacking up without adequate recovery between them and resequences your week automatically.
Proactive plan adjustment
Cue doesn't just warn you — it acts. When risk is elevated, the plan adjusts itself: volume reduced, sessions resequenced, recovery days protected. You stay on track without tipping over the edge.
Every other app uses the same rules for every athlete. Cue builds a model around you — and the longer you train with it, the more precise it gets.
Establishes your personal HRV, sleep and recovery norms.
Read more →Identifies how your body responds to load, stress and recovery.
Read more →Adjustments driven by your data — not population averages.
Read more →Understands your training response better than any generic plan.
Read more →Cue is not for casual fitness. It's for the athletes who already track their data and want to finally do something intelligent with it.
If you're training for an Ironman or 70.3 and you've ever pushed through a workout that your body was screaming at you to skip — Cue was built for you.
Join the waitlist and get early access when Cue launches. Free during beta.
✓ You're on the list. We'll be in touch.