Helix
Readiness
A single score, fully explained.
HRV, resting heart rate, sleep and load, each against your baseline. Every contributor visible.
Health and performance, for iPhone
Your physiology, read as one system.
Recovery, sleep, training and food, measured against your own baseline. One clear read every morning, from the watch or ring you already wear.
Works with the watch or ring you already wear
Through Apple Health. Fitbit connects via Google Health.
Five into one
Your data lives in five places.Helix reads it as one.
Every morning
One read, every morning.
Before you train, Helix weighs last night’s recovery against the load you’ve been carrying.
Sleep
Sleep, measured as recovery.
Measured against the sleep your training actually needs.
Load
Load you can see building.
Strain builds into fitness and form, with a warning when load rises faster than you absorb it.
Timetable
A plan that responds.
Each session is weighed against that morning’s readiness.
Helix AI
A coach with your context.
Ask why your HRV has dropped, or whether tomorrow’s intervals still make sense. It answers from your own data.
How has my HRV been this month?
Helix AI
50.2ms, latest of 30 days↘ about 8%
Down about 8% across the month, with the dip in the last ten days. That lines up with the block you’ve just done, rather than anything new.
Should I do the intervals tomorrow?
Nutrition
Fuel for the work you’re doing.
Photograph a meal. Helix measures it against the day’s training.
615kcalSalmon, potatoes, greens
34 gProtein
45 gCarbs
32 gFat
91%confidence
Activity
Every session has a recovery cost.
Record a run or ride, then see what it took out of you and how long recovery will take.
Hill loop, west sideRecorded in Helix
- Distance
- 6.21 mi
- Time
- 51:32
- Avg pace
- 8:18 /mi
Groups
Nobody quits alone.
Your group’s mornings, side by side, and one streak you keep together. Skipping is harder when the gap has your name on it.
This morning
Everyone’s readiness, sleep and load, as shared
40Compromised
5.4hSleep
15.5Strain
12Streak
78Ready
8.1hSleep
12.2Strain
12Streak
- WrenUsed a freeze. Streak held at 12.Freeze
- AshCommitment met
- TheoLogged an 18.9 strain session
- CassStill has until 8pmOpen
A day with Helix
Twenty‑four hours with Helix.
Most of its work happens in the background. These are the moments you’ll see.
- 06:58
Morning briefing
Short on sleep and HRV is down. Keep today easy.
- 07:05
Morning check-in
Four questions that capture what a sensor can’t.
- 12:40
Snap a meal
Salmon, potatoes, greens. 615 kcal, measured against today’s training.
- 18:30
Record a session
Hill loop, 6.21 miles in 51:32. Then what it cost, and when you’ll be ready again.
- 19:45
The group
Four of five have shown up. Cass still has until 8pm to keep the streak.
- Monday
Weekly report
Your week’s load, sleep and readiness, beside your group’s.
In context
Not high or low. High for you.
Every night is read against the band that’s normal for you, not a population average.
Inside a score
How a score is assembled.
It starts from your normal. Each signal moves it up or down. You see every step.
Also in Helix
Also in Helix.
Weekly report
Every Monday: your week’s load, sleep and readiness, beside your group’s.
Widgets
Readiness, sleep and the group on your Home Screen and Lock Screen.
Apple Watch app
Today’s readiness on your wrist.
Morning briefing
One notification each morning with the reading that matters.
Early-warning card
Flags when several overnight markers deviate together. Not a diagnosis.
Face ID lock
Lock Helix behind Face ID.
Race predictor
5K to marathon predictions from your recent efforts.
- 5K
- 24:05
- 10K
- 50:12
- Half
- 1:51:40
- Marathon
- 3:57:10
How it all connects
Correlations in your own data, tested for statistical significance.
Labs and Health records
Blood markers and clinical records, stored on your phone.
Coach mode
Your squad’s readiness on one screen.
Who’s ready, who’s steady and who needs you, every morning. Each athlete decides what you see.
- For you
- Freefor life
- For your athletes
- 30days free
- For your squad
- up to 64athletes
Your coach code unlocks Coach mode and Premium for your own training.
Premium through your link, once per athlete.
Approve each athlete, or let them straight in.
Privacy
Your physiology stays on your phone.
Helix processes health data on your iPhone. Only what you choose to share ever leaves it.
On-device by default.
Analysis runs on your iPhone, and GPS routes never leave it, even when you post a session.
Shared by metric.
Your group sees only the metrics you switch on, and you can change them at any time.
AI off by default.
Nothing reaches Groq, our AI provider, until you opt in. Groq retains nothing and doesn’t train on it.
No ads or tracking.
No advertising, no third-party analytics and no data sales.
Pricing
Fourteen days, everything included.
No card required. Then £1.54 a week, billed annually at £79.99, or £4 a week with no commitment.
Due today
£0
Full access. No card required.
- TodayFull access
- Day 11We remind you
- Day 14Choose a plan
After 14 days: £79.99 a year. Nothing is charged automatically.
Join the waitlistCancel any time in your App Store settings. Restore a purchase or redeem a code at any time.
Do I need a new wearable?
No. Helix reads Apple Health, so the Apple Watch, Garmin, Oura or Fitbit you already wear works. Fitbit comes through Google Health.
What does my group see?
Only what you choose to share, metric by metric. Share your sleep but not your weight, and change it whenever you like.
Is the AI coach on by default?
No. Helix AI is off until you turn it on, and it shows you exactly what it sees before you agree.
How much does it cost?
All of Helix is free for 14 days, with no card. Then £79.99 a year, which works out at £1.54 a week, or £4 a week with no commitment. You’ll get reminders on days 11, 13 and 14. Nothing is charged automatically: at the end you choose a plan, and your data is kept.
When can I get it?
Helix comes to iPhone in the UK on 1 December 2026. Join the waitlist and we’ll email you the morning it lands.
Is there an Android version?
Not yet. Helix is built for iPhone, with a companion Apple Watch app.
Launching 1 December.
Join the waitlist and we’ll send one email on launch morning.
- 1TodayYou’re on the list.
- 21 DecemberOne email with the App Store link.
- 3First openYour 14 free days start. No card.