HELIOS vs TrainerRoad: Which One Can Tell You Why You're Not Getting Faster?
I did every session on the plan for a year and my FTP moved by four watts. TrainerRoad executed all of it and never once told me why. So I wore a ring alongside it for four months to find out whether the ring could.
By Marcus Chen, Cycling Tech Analyst · 4 months side by side · Training tech reviewed since 2018
Here's the problem I had, and I'd bet it's yours. I train eight to ten hours a week around a job. I follow the plan. I don't skip intervals. And for most of last year my FTP sat within a few watts of the same number, every test.
I'm not unusual. On the TrainerRoad subreddit a rider who'd just finished a block wrote, “3 months of structured training for a 0w increase in FTP, great,” and cancelled. He'd done the work. The software had executed it perfectly.
That's the whole review in one sentence.
About This Test
- Ring on my finger every night. TrainerRoad on the trainer and outdoors.
- Four months, one block after another, same weekly hours as before
- Every morning I wrote down what THRIVE proposed before I opened TrainerRoad
- I logged food in THRIVE and nowhere else
- No sponsorship, no affiliate commission
Quick Verdict Summary
Head-to-head, four months on the same legs
HELIOS
Winner- Winner: Reads the night, every night
- Winner: Sleep, training and food together
- Winner: Proposes tomorrow, with approval
- Winner: Rebuilds the week when a day moves
- Winner: A ring you forget you're wearing
TrainerRoad
- Has: a workout library and ladder
- Has: adaptations from ride files
- Has: indoor execution on the trainer
- Missing: anything about last night
- Missing: anything I ate
Side-by-Side Feature Comparison
Devices, apps and who decides — measured over four months
| Feature | HELIOS | TrainerRoad |
|---|---|---|
| Worn while you sleep | Every night, 3–4 g titanium | — |
| Charge | 7–10 days | — |
| Sees how you slept | Yes | No |
| Sees what you ate | Yes, same app | No |
| Sees what you ate | Yes — same app | |
| Builds the morning call from all three | Yes | |
| Changes tomorrow's session | Proposes, you approve | |
| Rebuilds the rest of the week | Yes | |
| Coach you can ask a question | Marco, in the app | |
| Asks before it changes anything | Yes | |
| Outdoor rides | Native | Model struggles |
| Explains why it changed | Marco, in plain words | On its forum |
| Power | Estimated trend | Meter, if owned |
| Navigation | In the app | On the Edge |
| Fuel plan | Built to the session | No |
| Works if you stop paying | Ring keeps working | Varies by vendor |
| Adapts automatically | Marco, with your OK | Automatic, no explanation |
| Price | See the offer | Subscription |
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Road Test: Three Mornings That Decided It
Same plan, same weeks, both running in parallel, four months.
The Morning After a Bad Night
HELIOS: read the night, proposed moving the intervals to Tuesday, and reflowed the week around it.
TrainerRoad: kept Sunday’s plan. It can’t see a night, so it can’t react to one.
Verdict: HELIOS + THRIVE. It saw the night. The other one wasn't looking.
What Goes Into the Number
HELIOS: the morning number is built from sleep, this week’s training load and what I ate, and Marco says which one moved.
TrainerRoad: adapts from ride files alone. Its own users ask on its forum why the adaptations happen.
Verdict: HELIOS + THRIVE, because it reads three things, and tells you which one moved.
The Week That Food Was the Problem
HELIOS: flagged the slide on hard days; Marco read it as under-fuelling and changed the fuel plan for the block.
TrainerRoad: has never seen a meal. It would have read the same slide as “getting weaker” and adapted the plan down.
Verdict: HELIOS + THRIVE, and it isn't close. TrainerRoad isn't in this contest.
Bottom line: this is the part that answers the headline. When you're doing the work and the number isn't moving, it's almost never that you need to train harder.
Europe's and America's sports-medicine bodies put out a joint statement on overtraining, and it is clear that no single marker tells you where an athlete is. You need several, read together. THRIVE reads several.
Real-World Testing Insights
Straight answers from four months of testing
Q: My FTP has been flat for a year. Is that really a recovery problem?
In most of the riders I've talked to, yes. A 2019 controlled study on well-trained cyclists is the cleanest evidence: riders whose plan adjusted daily to their own recovery improved peak power, threshold power and a 40-minute time trial over eight weeks.
The fixed-plan group didn't improve significantly. Same hours, same work. The difference was whether the plan listened.
Q: TrainerRoad adapts too. What's the difference?
What it adapts from. TrainerRoad adapts from the ride you just did. THRIVE adapts from the night before the ride you're about to do, plus what you've eaten and what you're carrying.
One reacts to a bad session. The other tries to prevent it.
Q: Does THRIVE change my plan without asking?
No. It proposes, once a day, in the morning. You approve or you don't.
Nothing changes on its own and nothing changes mid-ride.
Q: Can I keep TrainerRoad's workouts?
THRIVE builds and holds its own plan and executes it in its own ride computer, on your phone.
Running two planners against each other defeats the point of one of them knowing your recovery.
- TrainerRoad subscription, two years
- A Garmin Edge or a phone mount — TrainerRoad doesn't ride outside on its own
- A power meter, because its adaptations are built on power
- A food app, separately, that never talks to it
Compare that to:
- • HELIOS smart ring: see the offer
- • Ride computer and training plan: in the app
- • Free sizing kit: ships first if you need one
- • One plan, first month free, cancel any time
And the ring keeps working if you ever stop paying. That’s the difference between us and the practice riders are angry about.
Q: What's the biggest weakness of each?
HELIOS: power on the bike is estimated, and there's no screen on the bars other than your phone.
TrainerRoad: it has never seen you sleep or eat, and its users say so on its own forum.
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Who Should Buy What?
Choose HELIOS if:
- You're doing the work and the number isn't moving
- You want the plan to change when your sleep does
- You've never had fuelling in the plan
- You want to approve changes, not discover them
- You'd rather wear a ring to bed than a watch
- You want one app for plan, food and the ride
Choose TrainerRoad if:
- You only ride indoors and only want the next interval
- You're happy adapting off ride files alone
- You'll pick your own easier day after a bad night
- You have a separate way of handling food
- You don't need to know why the plan changed
- The trainer screen is the only screen you want
After 4 Months, Here’s What I’m Using
The ring, every night, and THRIVE for the plan. TrainerRoad is still installed.
I haven't opened TrainerRoad since week seven.
TrainerRoad adapted the plan. It never told me why.
My FTP finally started moving.
I’m not claiming the ring did that alone. I’m claiming something finally decided.
HELIOS
Best for: Deciding tomorrow
TrainerRoad
Best for: What interval is next
MARCUS'S TOP PICK: HELIOS + THRIVE
“The first system I've used that could tell me why a block didn't work, before the block was over.”
The difference is what goes into the number and what happens after it.
With the ring reading every night, you get a plan that answers to how you actually recovered
- 30-day money-back guarantee
- 2-year warranty
- In stock — ships in 2 business days
Key Takeaways
A flat FTP with consistent training is usually a recovery problem, not a training one.
TrainerRoad adapts from ride files; it has never seen your sleep or your food.
THRIVE's morning call is built from sleep, load and food together.
It proposes; you approve. Daily, never mid-ride.
The evidence is a 2019 study on well-trained cyclists: the plan that adjusted to each rider's recovery won, the fixed plan didn't.
Power is estimated. If you race on watts, keep the meter.
About HELIOS
THRIVE's claim is that in 2026 no product could see every necessary data point, tie it together and give you one feedback loop, so they built one. HELIOS is a grade-5 titanium ring, 3–4 g, 7–10 day battery, heart rate, blood oxygen, skin temperature and motion sensors, water resistant to 330 ft, worn 24/7. THRIVE is the app: it asks about you and your goal, builds your plan, builds the nutrition plan that fuels it (photo, barcode, saved meals, or tell Marco), and runs your rides through its own fully equipped bike computer with climbs, estimated power, cadence, heart rate, routes and group rides. Marco is the coach inside it, trained on sports scientists and cycling coaches, with full context on your recovery, nutrition, plan and goals. He proposes; you approve. Strength and mobility work is in there too.
Key Features
- Grade-5 titanium, 3–4 g
- Heart rate, blood oxygen, skin temp
- 7–10 day battery, USB-C
- 330 ft water resistant, CE certified
- Marco proposes; you approve
- Daily adaptation, never mid-ride
- Power is an estimated relative trend
What's Included
- HELIOS titanium smart ring
- Ride computer and plan
- Nutrition plan and Marco
- Free sizing kit first, if you need one
- 30-day money-back guarantee
- 2-year warranty
- Free shipping
Price
See the offer
Warranty
2 years
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