The same model the sports-science labs use, built entirely from your own data via a blood-lactate step test you run at home, or with a coach, at a fraction of the cost.
One paired upload, refinable for a week.
Best for one-off testing.
Unlimited uploads, all year.
Best for seasonal re-testing.
One payment, unlimited uploads forever.
Best value, long-term.
A coach runs the protocol with you. We bring the meter.
Highest accuracy. Run by a human.
VO₂max (how much oxygen you can use) and how fast you produce lactate at peak effort — the two engines that shape every metric below.
The line between sustainable and unsustainable effort, the top of your easy zone, and where your race-day fitness actually sits.
The intensity that maxes out fat-burning. The pace you can hold forever, the foundation of every aerobic-base block.
Training zones for cycling, running, and base-building — built entirely from your own data, not population averages. Paste them straight into your training app.
Grams of carbohydrate per minute at every intensity — so you know how much to eat on long runs, race day, and intervals before you bonk.
Half-marathon pace, hour-long all-out power, ultra pace — all derivable from your lactate test. The number you can hold, not the number you hope you can.
Your anaerobic engine is estimated from sprint power using a published formula. VO₂max comes from your 6-minute max effort, using a standard relation. Useful as a directional read on your training zones — but lactate production varies a lot at any given sprint output, and those errors cascade through to your thresholds, fat-burning peak, and fueling estimates.
Your anaerobic engine is measured from blood lactate at peak sprint effort, and your full step test pins down your thresholds and fat-burning peak directly. The same model the sports-science labs use, built entirely from your own data instead of population averages.