Free shipping on every order, with a 30-day ride-it-and-see returns window. Founder-pricing pre-orders ship in the next production batch — your confirmation email always shows the current estimate.
Every HELIOS is covered by a 1-year warranty against defects, extendable with THRIVE Coverage.
Grade-5 titanium · 2.4 g · IP68 to 100 m · up to 7-day battery · 80+ biomarkers · sizes 6–13 · iOS + Android. Full spec sheet ships in the box and lives in the THRIVE app.
"This changes cycling forever" - CGR
Health tracking & cycling technology, backed by leading sports scientists, cycling coaches with an AI overlay, delivers the world's first all-in-one health & fitness solution exclusive to cyclists.
Subscription required: 1 month free then $14.99/month. Cancel anytime.
30-day trial
Free shipping
1 year warrantyI was stuck at the same FTP for 8 months. HELIOS showed me I was overtraining and needed more recovery. Within 6 weeks of following the AI coach, I gained 15 watts and finally dropped the guys who used to drop me.
Between work and family, I only get 6 hours a week to train. HELIOS tells me exactly what workout to do each day based on my recovery. No more wasted rides. Every session counts now.
I used to second-guess every training decision. HELIOS gives me confidence that I'm doing the right thing every single day. My trends caught overtraining before it became an injury. Game-changer.
Sensitive skin made every long ride miserable with a strap. HELIOS reads within a couple bpm of my old Polar on intervals, and I forget it is even there. Wish I had switched a year ago.
Marco kept me from blowing up at the wrong moment three different times across 28 hours of riding. The fueling reminders alone earned back the subscription. I rode sharper than ever.
I followed the plan Marco built for the full 90 days and set PRs on three different climbs. The plan adapted every week based on what the ring saw. No marketing claim — just my own data.
I was stuck at the same FTP for 8 months. HELIOS showed me I was overtraining and needed more recovery. Within 6 weeks of following the AI coach, I gained 15 watts and finally dropped the guys who used to drop me.
Between work and family, I only get 6 hours a week to train. HELIOS tells me exactly what workout to do each day based on my recovery. No more wasted rides. Every session counts now.
I used to second-guess every training decision. HELIOS gives me confidence that I'm doing the right thing every single day. My trends caught overtraining before it became an injury. Game-changer.
Sensitive skin made every long ride miserable with a strap. HELIOS reads within a couple bpm of my old Polar on intervals, and I forget it is even there. Wish I had switched a year ago.
Marco kept me from blowing up at the wrong moment three different times across 28 hours of riding. The fueling reminders alone earned back the subscription. I rode sharper than ever.
I followed the plan Marco built for the full 90 days and set PRs on three different climbs. The plan adapted every week based on what the ring saw. No marketing claim — just my own data.
One 2.4 g ring does everything your current pile of devices and subscriptions does — for a fraction of the price.
Cycling physiology, coaching & nutrition research — distilled into one coach.
Your real performance & recovery metrics — and what you log — always in view.
Detailed training & nutrition plans that adapt to hit your goals.
Daily updates, notifications & summaries — over chat and voice.
A morning readiness call. A heads-up when you're overreaching. A plan that updates itself. Marco brings it to you — by text or by voice, whenever you ride.
Pair once. After that the phone takes care of the rest — readiness in the morning, live metrics on the ride, the long view on Sunday. We didn't add a single dashboard you have to learn.
Not paid ambassadors — riders who got early access and stayed.
Five things arrive together — the ring, the gear that powers it, and a year of everything that makes it smart.
Grade-5 titanium · 2.4 g · IP68
Sizing kit, guide & magnetic case
Full charge in 45 min
Ultra + Marco AI coaching
Magazine · strength · podcast
We don't hide the 3 and 4-star reviews. Every review here is from a verified buyer who has worn HELIOS for at least 14 days.
W e started THRIVE because we were tired of riding with a watch, a chest strap, a cycling computer, a recovery app, a sleep tracker and a coach we never had time to call back. Three of us are cyclists. One of us is a sports physiologist. All of us were drowning in data that lived on six different screens.
HELIOS started with a question: what if the sensor disappeared, and the coaching showed up where you actually live — on your phone, in your morning, on your ride? Eighteen months later, this is what we shipped. A 2.4-gram titanium ring that catches every signal a chest strap catches. A platform that turns those signals into one number you can act on. And a team of coaches and clinicians sitting behind the AI so it never feels like talking to a robot.
We can't promise HELIOS will turn you into a Cat 1 racer. We can promise it will give you back the brain cycles you spent juggling devices, and replace them with a clearer answer to one question: how do I ride better tomorrow than I did today. That's all we set out to do.
Founder pricing closes when we hit 1,000 packs. If you make it in, you're not buying a ring — you're joining the first batch that gets to ride with us as we build the rest.
Full refund. We pay the return label. Keep the sizing kit. We're confident because every founder-batch ring is built in Australia, hand-checked, and serial-numbered.
HELIOS and the THRIVE app are general wellness and fitness products. They are designed to support training, recovery and lifestyle decisions — not to diagnose, treat, cure or prevent any disease or medical condition. The metrics shown (heart rate, HRV, SpO₂, sleep, temperature, readiness, stress) are intended as directional guidance for healthy adults, not as clinical measurements. If you have a heart condition, are pregnant, are managing a chronic illness, or notice anything unusual in your health, please consult your doctor before changing your training, nutrition or sleep based on what HELIOS shows you. HELIOS is not a substitute for professional medical advice, diagnosis or treatment.
The world's first AI coach for cyclists. Trained by 200+ sports scientists, coaches & physicians.
Health tracking & cycling technology, backed by leading sports scientists, cycling coaches with an AI overlay, delivers the world's first all-in-one health & fitness solution exclusive to cyclists.
Download the THRIVE app now.
I was stuck at the same FTP for 8 months. HELIOS showed me I was overtraining and needed more recovery. Within 6 weeks of following the AI coach, I gained 15 watts and finally dropped the guys who used to drop me.
Between work and family, I only get 6 hours a week to train. HELIOS tells me exactly what workout to do each day based on my recovery. No more wasted rides. Every session counts now.
I used to second-guess every training decision. HELIOS gives me confidence that I’m doing the right thing every single day. My trends caught overtraining before it became an injury. Game-changer.
Sensitive skin made every long ride miserable with a strap. HELIOS reads within a couple bpm of my old Polar on intervals, and I forget it is even there. Wish I had switched a year ago.
Marco kept me from blowing up at the wrong moment three different times across 28 hours of riding. The fueling reminders alone earned back the subscription. I rode sharper than ever.
I followed the plan Marco built for the full 90 days and set PRs on three different climbs. The plan adapted every week based on what the ring saw. No marketing claim — just my own data.
One 2.4 g ring does everything your current pile of devices and subscriptions does — for a fraction of the price.
Pair once. Readiness in the morning, live metrics on the ride, the long view on Sunday.
Not paid ambassadors — riders who got early access and stayed.
Five things arrive together — the ring, the gear that powers it, and a year of everything that makes it smart.
Grade-5 titanium · 2.4 g · IP68
Sizing kit, guide & magnetic case
Full charge in 45 min
Ultra + Marco AI coaching
Magazine · strength · podcast
We don’t hide the 3- and 4-star reviews. Every one is from a verified buyer.
HR tracking is within 2bpm of my Polar H10 in every ride — including a 4hr threshold day. Best thing I’ve bought for cycling this year.
Cancelled TrainingPeaks and Headspace. Sleep tracking is more useful than my Oura because Marco actually says something with it.
Hardware is excellent. Knocking a star because pairing with my Wahoo took two attempts. App could also use a way to silence Marco for a day.
Marco flagged three days of suppressed HRV and recommended two days easy. I ignored him, did the threshold workout, blew up. Now I listen.
The product itself is 5 stars. Knocking it down because the monthly locks the features I bought it for. Should be clearer upfront.
Sensitive skin made a chest strap hell on long rides. This replaces it and reads within 1–3bpm of my old strap on intervals.
Said 7-day battery. In −8°C I got closer to 5 days. Otherwise excellent — would buy again. Wish the marketing was clearer.
Marco kept me from blowing up at the wrong moment three times across 28 hours. The fueling reminders alone earned the subscription.
Followed the plan Marco built for the full 90 days. PRs on three climbs. The plan adapted weekly based on what the ring saw.
We started THRIVE because we were tired of riding with a watch, a chest strap, a cycling computer, a recovery app, a sleep tracker and a coach we never had time to call back.
HELIOS started with one question: what if the sensor disappeared, and the coaching showed up where you actually live — on your phone, in your morning, on your ride?
We can't promise HELIOS will turn you into a Cat 1 racer. We can promise it will give you back the brain cycles you spent juggling devices.
Wear it for 30 days.
If it's not better,
send it back.
Full refund. We pay the return label. Keep the sizing kit. Built in Australia, hand-checked.
