Halo by Terramind
A quieter way to understand your body.
Halo reads Apple Health and turns it into a calm daily picture, with a coach that knows your numbers before it answers.
- Sleep7.4 hIn your range
- Breathing14 rpmIn your range
- Heart62 bpmIn your range
Example readings
Move
Halo reads your workouts from Apple Health and sizes today's session to how ready you are.
Cardiovascular
A four-chambered pump moving around 7,500 litres of blood a day. Resting rate and variability are your clearest windows into cardiovascular fitness and recovery.
In Halo it beats at your resting rate, with the beat-to-beat variation your HRV describes. Drag to turn it.
Respiratory
Roughly 300 million alveoli exchange oxygen for carbon dioxide. Breathing rate during sleep and blood oxygen show how well that exchange is going.
Each inhale runs down the bronchial tree into the alveoli, at your own breathing rate.
Today
Readiness is an estimate built from your HRV and resting heart rate against your own 7-day baseline, plus last night's sleep against your goal.
Your normal range, shaded. Illustrative.
For every kind of training
Sleep
Your stages through the night, fourteen nights side by side, and the vitals that moved while you slept.
One night's stages. Illustrative.
One picture
Coach
Nutrients
Each capsule fills to your latest result; between its two rings is your healthy range. 2 need a little help, 4 are on target.
Vitamin D the sunshine vitamin
24ng/mLLow
Five reports · healthy 30–100 ng/mL
Your body makes vitamin D when sunlight hits your skin, and gets a little from food.
What helpsSafe sun exposure, oily fish, eggs and fortified foods help; many people need a supplement in winter.
In the planVitamin D3, 2,000 IU a day
- Vit D
- B12
- Ferritin
- Magnesium
- Folate
- Omega-3
- LDL cholesterol132 mg/dL · above 100
- Haemoglobin15.1 g/dL · in range
- Vitamin D24 ng/mL · below 30
- Ferritin38 ng/mL · in range
Blood
Halo reads the results, you check them, and each one lands in the right place: cholesterol under Heart, iron under Blood, vitamins under Nutrients.
- Plasma
- The clear, golden liquid on top. Fats, sugar, hormones and vitamins travel in it.
- White cells & platelets
- A thin pale band, the buffy coat. It holds the immune cells and platelets.
- Red cells
- Heavy red cells pack down at the bottom. They carry oxygen.
Sample report. Not medical advice; ranges are typical adult ranges.
Coach
Before it answers, Halo reads whatever bears on the question: sleep, heart, training, diet, supplements and blood reports. Then it answers in your own numbers and shows what it looked at. It is a coach, not a doctor.
YouWhy do my runs feel harder lately?
- Reading your blood reports
- Reading your Ferritin history
- Reading 30 nights of sleep
- Reading 14 days of diet
- Reading 30 days of supplements
Looked at Labs · Sleep · Diet · Supplements
Your iron stores have been falling: ferritin is down to 38 ng/mL across five reports, while your runs went up.
An example, on the app's sample data.
Hubs
Vitals
Everything Apple Health records about you, in one place.
Nourish
Water and protein, logged in a line.
Breathe
Guided box breathing, saved to Health as mindful minutes.
Mind
Mood, mindful minutes, daylight and noise.
Private
Halo reads Apple Health on your iPhone. Raw readings stay there; summaries leave it only when you choose to sync or ask Terramind AI.
Membership
- Monthly
- $9.99
- Yearly
- $69.99
- Top-up
- $4.99 if you need more
Already on Terramind? Halo is included.
Coming to iPhone.
Learn your normal, then move with it.