Welcome to archē
See what actually moves your health
archē reads your day-by-day wearable record and shows which habits, treatments and rhythms shift your HRV, sleep and recovery — measured against your own baseline. Everything stays on this device; nothing is uploaded.
State
Your daily snapshot — how you slept and recovered, gauged against your own 90-day baseline.
Impact
What moves the needle — which daily behaviours shift your HRV, sleep and mood.
Trends
The long view — baseline shifts across treatment eras, and how effects diminish between doses.
Set up what you track
Your State tab is where you check in each day — even before any wearable data lands. Tell archē what to follow:
Compared with your 90-day baseline
Daily check-in
Today's context
Log daily factors to test if they have a meaningful impact on your biometrics in the Impact and Trends tabs.
Treatments
Log doses, infusions, and supplements to track cycle timing across Impact and Trends.
Active Era
Anything worth remembering?
Long-term trends shaping your health.
Connect your health data to see your long-term trajectory.
Trends
Your baseline over time, stepped across each treatment era so you can watch it shift.
Cycle Analysis
Track how a metric moves between treatments — does the benefit diminish before the next dose?
Compare eras
Put any two periods side by side to see which one your body preferred.
Is it working?
Compare eras
Choose any eras to compare side by side.
Pick at least one era
Tap a chip above to put it on the chart.
Trends
Your baseline over time, stepped across each treatment era.
Cycle Analysis
Does a treatment's benefit diminish before the next dose?
Same-day and next-morning impact of daily behaviors.
Connect your health data to bring these to life.
Daily Impact
Ranks which daily factors push a metric above or below your baseline.
Single Variable
Isolate one factor — say alcohol or a long run — and see its footprint across every metric.
Weekly Patterns
Averages by weekday, so recurring weekly rhythms — and rough Mondays — stand out.
Dose-Response
Finds the sweet spot — how much of a good thing helps before it starts to cost you.
Daily Impact
Daily behaviors and events that drive shifts from your baseline.
Single Variable
See one factor's effect on each metric.
Weekly Patterns
Your metrics averaged by weekday.
Dose-Response
Track how varying amounts of a habit or factor influence your metrics.
Activity mix
Weekly active minutes across your top 5 activities, comparing recent training volume against your longer-term baseline.
System Setup
Your setup
Theme
Blind morning check-in
Prompts a perception rating each morning to compare subjective sleep against metrics.
Dose reminders
Data reset
Back up your data in before resetting as erasing all data cannot be undone.
Data & Storage
Inbound · import
Sync with Health Connect.
Sync with Apple Health.
Upload Garmin zip file.
Restore archē from a backup file.
Not seeing your Apple Health data?
- The first time you tap Sync now, iPhone shows a Health Access screen. The switches start off — tap Turn On All (or switch on each item), then Allow.
- iPhone only shows that screen once. If you skipped it, turn access on by hand: Settings → Privacy & Security → Health → archē, enable the categories, then come back and tap Sync now again.
- Apple only shares what a device has actually recorded. If a metric is blank, make sure the Apple Watch is worn and synced — give it a day to build up.
How to get your data from Garmin
- Open Garmin's Export Your Data page and sign in if you aren't already.
- Click Export Your Data, then Request Data Export.
- Garmin's site says this can take anywhere from 48 hours to 30 days, but in practice the email usually lands within a few hours, with a .zip to download.
- Save that zip to your phone (or computer).
- Come back here, tap Garmin (.zip) above, and pick the file you just saved.
Outbound · download
For use in restoring archē data.
For Excel use.
Compact digest of archē data to discuss with AI.
History window
Data prior to this date is excluded so
irregular or unmonitored periods don't distort your baselines. Leave unchanged to analyze
your full history.
Overnight numbers
Manually log Garmin metrics not synced via Health Connect.
Treatments
Add treatments, then log doses. Together they drive cycle timing across every analysis.
Your treatments
Log doses
Eras & Timelines
Define your treatment and lifecycle phases. Segments partition your history
sequentially (dosing schedules, protocol shifts, habit changes) so archē can control for
confounding variables across distinct eras.
Appends a new sequential segment. Automatically sets
the start date and closes the preceding era the day before.
Outcomes & Factors
Outcomes · daily measures
Daily measures you rate (pain, mood, etc.), which archē uses to analyze
alongside your wearable metrics.
Factors & lifestyle chips
Discrete daily tags for habits, stressors, and events. Used across analysis
models to quantify immediate impact and multi-day recovery.
Day notes
Freeform entries from your daily check-ins. To track a habit or activity
against outcomes, create a lifestyle chip in Factors above.
Correct the outcomes, factors and note for an earlier day.
Doses are amended in Treatments.
About
archē AR‑kay /ˈɑːr.keɪ/
From the Greek ἀρχή — origin, first principle, primary cause.
archē provides an absolute baseline for your health. By synthesizing your sleep, overnight HRV, recovery metrics, and subjective logs, it evaluates change using your own historical distributions. Rather than comparing you to population norms or hiding insights behind opaque readiness scores, archē keeps your data transparent and grounded in personal context.
Designed around an n‑of‑1 methodology, archē treats your health as an ongoing study with one subject—you. It equips you with the statistical clarity to spot real trends, eliminate noise, and optimize your life from first principles up.
Personal n-of-1 observational data. Correlation from your
own history, not medical advice. Talk to your doctor before changing any treatment.