The Generic Health Tracker Trap: Why the familiar Free AI Is Giving Cyclists Wrong Data
The internet is flooded with generic health trackers, and everybody doesn’t realize that it’s a complete trap, which gets even worst for cyclists. They’re cheap, they say “AI” on the box, and the AI inside is the absolute garbage of the garbage. I tested five ways a new rider gets coached, on the same legs for four months. Four of them guessed. One of them could see me.
By Tom Ashcroft, Test Editor
Here’s a scene from r/cycling that got over a hundred upvotes. A rider who’d started riding more asked: “I have started cycling more and am currently tracking my speed with my phone… Is this a good idea or would a bike computer be a much better option?” The thread argued a different device at him for two days. Nobody asked what he’d do with the numbers.
That’s the first purchase, in one thread. You’re a year or two in. You’re serious. You’re on an Apple Watch or a phone and you know you’ve outgrown it, and the market is a wall of cheap trackers that all promise AI insights for nothing. Another rider on the same subreddit gave the only advice worth having: “Kit gets expensive, no sense in dropping a lot of cash then finding out it’s not your jam.”
Here’s what the wall isn’t telling you. The cheap generic health tracker that you purchased, which has free AI integrated, is giving you the wrong data.
Not because the sensor is bad. Because the layer above it, the part that turns readings into advice, is a free model with no compute. Any free AI model has no compute power to give you a stable analysis of your data, so almost always it hallucinates, and it will give you something that’s wrong.
For those of you that don’t know what AI hallucination is, it’s what happens when cheap free AI models look at something, compute it, and give you back information that’s completely wrong. You don’t have to believe me. I’m sure you’ve seen it already, testing some of the free or cheap models out there.
What follows is what the owners of five of them said, in public, and the one coach that isn’t guessing.
Quality grade: VERY GOOD
Marco, inside HELIOS + THRIVE
Marco is the AI coach inside the THRIVE app, which utilises the Helios Smart ring - the first smart ring made exclusively for cyclists. The only coach in the test that could see me
- THRIVE’s stance is that cheap generic fitness trackers give you generic data, and Marco is what they built instead.
- After four months, the difference is what he can see and what he’s allowed to do.
- THRIVE reads the HELIOS ring, a titanium ring you wear 24/7, so Marco knew how I’d slept without me typing a word.
- The ride computer and the food log live in the same app.
- He’s trained on sports scientists and coaches, and he builds the plan into your calendar, not a chat.
- Power on the bike is estimated, and adaptation is once a day, in the morning, never mid-ride.
⚠ Your phone is the ride screen
One ring, one app, one coach: three inputs held together, and a week that changes when you say yes.
30-day money-back guarantee.
iOS + Android.
Expert knowledge: what “free AI” costs
“It is a very powerful tool to manipulate, but it can often hallucinate so be careful.”
— @joshtdai, a rider who raised his FTP 70 W with ChatGPT over a year, YouTube
A bundled free AI does one thing: describe. It summarises the day you already lived and hands the work back to you.
Reads sleep, fuelling and load together, proposes tomorrow, rebuilds the week around it — and waits for you to tap approve.
Four questions, weighted equally: can it see you, can it afford to think, does it act, does it ask first. We don’t score sensor accuracy. The trap isn’t the sensor. It’s the layer above it.
ChatGPT as a coach
A real model, coaching a rider it’s never met
The free AI new riders actually use, and the best of the free options because it’s at least a real model. It can’t see you. A rider building toward his first race: “he adjusted my schedule and added fitness 2/3 times a week … Now I stopped using chatgpt cuz I noticed he gives weird recovery ways that hurt my legs.” Everything it tells you is about the rider you describe, and you don’t yet know enough to describe yourself accurately.
- ✓ Real model
- ✓ Free
- ⚠ No link to any device
- ⚠ Forgets yesterday
- ⚠ Its own users report hallucinations
Humango
Adapts your plan. Automatically. Without you.
Humango’s own website advertises “real-time automatic training adaptation.” There is no step in its FAQ where you approve a change. That’s the model acting on you, and if it’s wrong, you ride the wrong week before you find out. A rider who tested it against two rivals: “The science behind this platform is less clear.”
- ✓ Multi-sport scheduler
- ⚠ Changes training without asking
- ⚠ Nutrition never mentioned in its own FAQ
- ⚠ Recovery signal questioned by side-by-side testers
TrainerRoad AI FTP Detection
Sixty watts of confidence
A rider on the TrainerRoad forum found his FTP raised from 233 to 293 overnight. “I cannot complete workouts with an FTP of 293.” Every session on his calendar had been rewritten to a number his body couldn’t do, and the AI never asked. His sensors were fine. The layer above them wasn’t.
- ✓ Workout library
- ⚠ Rewrites the plan without approval
- ⚠ On-record 60 W overshoot
- ⚠ Sees ride files only
“A cheap generic tracker with free AI”
Don’t waste another dollar on it. You are wasting your money.
Generic data with an AI overlay that hallucinates. That’s the product. The free model bolted on top is whatever the company could afford to run for nothing, and what it does on the mornings it isn’t sure is guess. An Oura owner caught his ring’s AI advisor doing exactly that, and six hundred people upvoted the transcript: “it admitted it made it up.” And that’s a premium ring. The cheap ones don’t even get caught, because nobody’s checking.
- ✓ Cheap
- ⚠ Hallucinates, on record
- ⚠ Generic advice for a rider it can’t see
- ⚠ No plan, no food, no ride
The Editorial Verdict: From Describing to Deciding
1 · The model. Marco runs on a powerful, proprietary-configured paid model with the compute to be stable. The free AI on a tracker runs on whatever costs nothing.
2 · The training. Marco is trained on sports science, cycling studies and coaching practice. The free one is a general chatbot with a cycling prompt.
3 · The data. Marco’s answers are grounded in your own sleep, recovery, rides, training load, fuelling and goals. The free one sees what you type.
4 · The memory. Marco holds your goal, your plan and your history, and comes back to you with check-ins. The free one starts blank every chat.
5 · The hands. Marco builds a full plan, plans meals, builds routes, logs food and edits live cards in the chat. The free one writes paragraphs.
6 · The manners. Marco proposes a change as a card you approve. The free one guesses, and the paid rivals move your plan without asking.
HELIOS + THRIVE: The test winner
Three inputs, a coach that changes your plan, and a hard rule that it asks first.
Go to test winner →Frequently asked questions before you buy
Because free is the price of a model with no compute and no sight. THRIVE reads the ring, the ride and the food log, Marco runs on a powerful paid model trained on sports science and coaching, and he asks before anything changes.
It’s the first buy that explains itself. Six questions, a first plan around your hours, and a coach that says what each thing means.
Free sizing kit ships first. Then 30 days from delivery for a full refund.
Reader discussion
7 posts*My band’s AI told me I was “recovered” every single morning for six weeks. I believed it.
Marco told me on day two I wasn’t, and which of the three inputs had moved.
Genuine question, is this too much for someone who doesn’t know what threshold means yet?
It’s built for exactly that. It asks about you and your goal, builds the first plan around the hours you have, and Marco explains every number in plain words. You don’t get a dashboard dumped on you.
I was the ChatGPT guy. Pasted every ride in. The day I realised it had invented a “trend” I stopped.
The plan being in the calendar instead of a chat window is bigger than it sounds.
It waits for me to say yes. Everything else I tried either guessed or just changed things.
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