Supplement advice
that updates with your body,
every week.
Connect your Garmin, Oura, or Fitbit. Every week, SyncaVit analyses your sleep, HRV, and stress and builds a precise supplement protocol — with every recommendation explained.
Start your free 7-day trialFirst formula within 24 hours · £5.99/month after trial
Compatible with
Garmin·Oura·Fitbit·Apple Health·Samsung Health
This week's formula
HRV · 7-day avg
42 ms
↓ 12% below baseline
Sleep duration
6.2 h
↓ 0.8h below avg
Stress index
High
↑ Elevated all week
How it works
Logic Engine · No black boxes
Every recommendation is explained.
| Signal | Reading | Status | Output |
|---|---|---|---|
| HRV (7d avg) | 42ms · ↓12% | FLAGGED | Magnesium 400mg |
| Sleep onset | +40 min delay | FLAGGED | L-Theanine 200mg |
| Sunlight | Low exposure | FLAGGED | Vitamin D3 4000 IU |
| Stress markers | Elevated | FLAGGED | Ashwagandha 600mg |
| Resting HR | 52 bpm · stable | OK | — |
You see every signal, every threshold, every output. Always.
What we recommend
Evidence-based supplements
Our Logic Engine draws from a curated set of supplements backed by peer-reviewed research. Your recommendations are chosen based on your real health data — not guesswork.
Vitamin D3
Immune support & bone health
Omega-3
Heart & brain function
Magnesium
Sleep quality & recovery
Ashwagandha
Stress adaptation
CoQ10
Cellular energy production
Zinc
Immune & testosterone support
B-Complex
Energy metabolism
L-Theanine
Calm focus & sleep onset
Vitamin D3
Immune support & bone health
Omega-3
Heart & brain function
Magnesium
Sleep quality & recovery
Ashwagandha
Stress adaptation
CoQ10
Cellular energy production
Zinc
Immune & testosterone support
B-Complex
Energy metabolism
L-Theanine
Calm focus & sleep onset
+ more personalised additions based on your wearable data
Frequently asked questions
What devices are supported?+
Garmin, Oura Ring, Fitbit, Apple Health (via our iOS app), and Samsung Health. We pull sleep, HRV, recovery, and activity data automatically.
How are the recommendations generated?+
Our Logic Engine compares your last 7 days of wearable data against your personal 30-day baseline. When it detects meaningful shifts — like an HRV drop or poor sleep — it recommends specific supplements with evidence-based dosing.
Do you sell the supplements?+
No. We tell you exactly what to take and why, with links to buy from trusted retailers. You stay in control of where you purchase.
How often do recommendations update?+
Your recommendations refresh automatically each week based on the latest data from your wearable. You can also trigger a manual refresh at any time.
Is my health data safe?+
Yes. Your data is encrypted at rest and in transit. Wearable credentials are encrypted with per-user keys. We never sell or share your data.
Can I cancel anytime?+
Absolutely. Cancel from your Settings page in one click. If you cancel within your 7-day free trial, you won't be charged at all.
What happens after the free trial?+
After 7 days, your subscription continues at £5.99/month. You keep full access to the Lab, weekly recommendations, and all connected devices.
What people are saying
“I've spent years cobbling together a supplement stack from forum threads. SyncaVit just does it — and shows its working. My HRV has been trending up for six weeks.”
James M.
Garmin Fenix · Running
“The transparency is what got me. Not 'take magnesium' but 'your sleep onset delayed 40 minutes — here's why and here's the dose.' That specificity is rare.”
Sarah K.
Oura Ring · CrossFit
“I was sceptical. But seven days free and £5.99 a month — easy call. Three months in my recovery scores are the best they've been and I cancelled two supplements that weren't doing anything.”
Tom B.
Apple Health · Cycling
Start today
Ready to optimise?
Connect your wearable and get your first personalised recommendations within 24 hours of your first sync.
Start your free 7-day trialFirst formula within 24 hours · £5.99/month after 7 days.