80+
Data points
Accuracy & Validation
Accuracy you can train on
A training decision is only as good as the data behind it. HELIOS reads more than 80 data points straight from your finger โ continuously, day and night โ and turns them into one clear call: push, or pull back.
Scroll to explore โ
What HELIOS measures
One ring. 80+ signals.
Read straight from the source.
Most of what matters in training hides in the data your body produces every second. HELIOS captures it on your finger โ where the signal is cleanest โ and keeps reading while you ride, work and sleep.
Heart rate148bpm
Continuous, every second โ on the bike and off it.
Heart-rate variability82ms
Your readiness signal, captured overnight while you recover.
Blood oxygen96%
Tracked through the night, so altitude and load never go unseen.
Sleep & recovery91%
Stages, skin temperature and respiratory rate, every night.
LIVE ยท ON FINGER
Reading continuously, 24/7No straps. No external sensors. Just the ring and the app.
What HELIOS measures
One ring.
80+ signals.
Continuous
Read straight from the finger
Heart rate, HRV and blood oxygen, captured every second โ on the bike and off it.
Recovery
HRV & sleep, every night
Stages, skin temperature and respiratory rate, tracked while you recover.
Readiness
One clear answer each morning
Push or pull back โ the call your data has already made for you.
The Density
80+ data points,
on your hand
The richest training signal your body produces comes from the blood flow at the base of your finger. HELIOS reads it there โ more than 80 distinct data points โ and turns the noise into numbers you can actually act on.
- Heart rate, HRV, blood oxygen and skin temperature
- Sleep stages, respiratory rate and resting trends
- Movement and effort, captured without a button press
- All of it on one finger โ nothing clipped to the bike
Recovery You Can See
Heart rate
& HRV
Heart rate tells you how hard today was. Heart-rate variability tells you whether you are ready for tomorrow. HELIOS reads both continuously and plots the trend, so recovery stops being a guess and becomes something you can see.
- Continuous heart rate through every zone of the ride
- Overnight HRV captured while you actually recover
- Trends over weeks, not single noisy readings
- Clear flags when load is climbing faster than recovery
Recover On Purpose
Sleep stages
Adaptation happens while you sleep โ but only if you sleep well. HELIOS maps your night into stages and surfaces the things that quietly wreck recovery, so you can fix them before they cost you a session.
- Deep, light and REM, mapped across the whole night
- Skin temperature and respiratory rate read while you sleep
- A simple sleep score that tracks the trend, not one night
- Recovery you can plan around, not hope for
One Clear Answer
Daily
readiness
Push, or pull back? Every morning HELIOS weighs last night's sleep, your HRV trend and the load you have been carrying, and gives you a single readiness number. No spreadsheets. No second-guessing. One clear answer before you clip in.
- Sleep, HRV and training load weighed into one score
- A plain-language call: go hard, or hold back today
- Your session adjusted to the body you woke up in
- Built to keep you consistent, not just motivated
Earned, Not Claimed
Built to be
trusted
Accuracy is not a marketing line โ it is something a ring has to earn, reading after reading. HELIOS is benchmarked against trusted reference methods and refined continuously on real ride data from real cyclists, so the numbers you train on hold up.
- Benchmarked against trusted reference methods
- Refined continuously on real cyclist ride data
- Tuned for the demands of training, not just resting
- Improved with every firmware update over time
Always On You
Titanium build.
7-day battery.
Continuous data only works if the ring never leaves your finger. A 2.4 g aerospace-grade titanium shell shrugs off the ride, and up to seven days of battery means it keeps reading through long blocks, big weeks and the nights in between.
- Aerospace-grade titanium โ light, tough, on all day
- Up to 7 days of battery between charges
- Continuous reading, day and night, on the finger
- Travel charging case keeps it topped up anywhere
24/7
Continuous
7-day
Battery life
Ti
Titanium build
Data you can build a season on
HELIOS reads the signals, THRIVE turns them into the call. One ring. One app. Every answer โ accuracy you can actually train on.
80+ data pointsContinuous 24/77-day batteryTitanium build
Get the Pro Pack