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No borrowed goals

Every score is answering a question. DN1 starts with yours.

A continuous health coach for people already testing protocols, wearables, labs, training, and supplements. DN1 asks what outcome you care about, asks whether each signal serves that outcome, then uses the evidence to shape what you do tomorrow.

You're already running an experiment on yourself. DN1 closes the loop.

Signal accountabilityDay 33 / system updated

The score said rest. The evidence asked why.

Question DN1 was askedWill training today protect tomorrow's energy and clarity?
Recovery score answered
Generic readiness. Conservative rest default.
User cared about
Sharp workday, training adaptation, next-day function.
Personal signal
Best H10 chest-strap RMSSD, sharp subjective state, clean physiology.
DN1 adjudication
Inside non-clinical training decisions, rest now needs a named reason. Safety red flags and clinician instructions stay upstream.
VerdictSystem updated

What it does

  • Your perception is the sensor.

    You notice what no device measures: energy, mood, how you actually feel. Conversation surfaces it as structured data without making you fill out a form.

  • Signals earn their authority.

    Your wearable, labs, subjective state, and habits are judged against the outcome you chose. A score can be useful without being in charge.

  • Coaching is the surface.

    The evidence record constrains what the coach is allowed to claim. You see the plan and the reasoning, not the math.

The coach is the product surface

Coach surface example from the web app. Not a live production proof claim, and not medical instruction. The useful object is the pattern: one conversation, the relevant signals beside it, and a bounded next move.

DeltaN1 coach conversation surface in the web app
Coach surface example from the web app
Window
Day 90 outcome review / web coach surface
Sources
Conversation, weight trend, supplement ledger, back-pain logs, subjective energy reports
Evidence tier
Founder dogfood outcome summary, bounded as proof of method
Scope boundary
Training and recovery decision support only. Not diagnosis, treatment, or prescription guidance.
H10Polar H10 chest strap
RMSSDheart-rate-variability timing metric
HRVheart rate variability
RHRresting heart rate
BPblood pressure
Z3+Zone 3 or harder training

Why this isn't theater

Signal
Best H10 RMSSD of the program; subjective sharp; coach defaulted to Sunday active recovery.
Reconciliation
User pushed back, cited individual data, and the system stopped letting a generic recovery default overrule personal evidence without reason codes inside non-clinical training decisions.
Evidence tier
System updated
Tomorrow's plan
Rest recommendations now require named reason codes. Clinician guidance, symptoms, and safety red flags stay outside this override logic.

How we know things

Why I built this

“I thought walking and rucking were my cardiac base. 1,145 matched days said the real levers were weight and intensity, so the plan changed.”
Mark, founder.

I built DN1 because I needed a system that could tell me when my own protocols weren't doing what I thought they were doing.

Signal
I thought walking and rucking were my cardiac base.
Reconciliation
1,145 matched days; walk vs ruck Δ 0.8 bpm at matched pace; Z3+ minutes correlated with HRV gains.
Evidence tier
Observed
Tomorrow's plan
Walking moved to anchor practice. Rucks dropped Day 41. Norwegian 4×4 added.
Training adaptation6 years / n=1,145 matched days

Walking and rucking are not cardiac training for me. Weight and intensity are. The plan changed.


200-215 lbs
RHR 63 / HRV 34
215-225 lbs
RHR 70-72 / HRV 27-28
225-235 lbs
RHR 75-76 / HRV 21-24
Walking-heavy, no Z3+ (n=45)
RHR 72.2 / HRV 27.9
High Z3+ minutes (n=403)
RHR 65.1 / HRV 32.8
Walk vs ruck (matched pace)
Δ 0.8 bpm

Walking moved from “cardiac base” to “anchor practice.” Cardiac training was added separately, on the levers that actually moved cardiac. Rucks dropped Day 41. Norwegian 4×4 intervals added.


Plan changedTier: Observed

Walking stayed in the plan. Not for the heart rate. It stayed because it sets the day's body read, clears the head, and makes harder work more likely. Most tools would have dropped it when the cardiac signal came back flat. DN1 reassigned it to the job it actually performs.

Your version will not be rucks. It might be caffeine, creatine, appetite changes, blood pressure, afternoon fog, or whether a sleep score is actually protecting your day. The job is the same: make the signal prove it serves the goal.

More about the people who built DN1

Most people are running an unstructured experiment with their wearables.

You read your wearable in the morning. You change something. You ask a question. You journal sometimes. A few weeks later you can't remember whether the change mattered. That's the workflow most people are running with their tools. DN1 closes it: capture the intervention, set the verification window, measure how the number changed, keep the read bounded, and remember the context.

See current launch sources

What the system did for its first user

Founder dogfood, not market validation. The system has been running on me since March 10. Three proof-of-method artifacts from the first 48 days: what it tracked, what it decided, and the moment it got something wrong and updated.

External pilot ledger: not published yet. Founder dogfood is proof of method, not proof of market.

Substrate2026-03-15 → 2026-04-27

I never rated my sleep on a 1-to-10 scale. The system extracted it from the conversation.

294
subjective rows
35
days of coverage
8
canonical metrics

Per-metric coverage. Every row has source_system = llm_derived.
metricrowsdays
energy_level4933
mood4431
mental_clarity4031
motivation3928
stress_level3324
soreness2619
sleep_quality_subjective2420
digestion_quality2117

No forms. No scales. The coach reads the morning braindump and the structured rows fall out the back. Every row keeps the verbatim sentence it came from.


Substrate verifiedTier: Observed
Decision ledger48 days of dogfood, 11 rows

What got tested. What got kept. What got dropped. What got reassigned.

2 kept6 dropped1 reassigned2 added

Keep: Thiamax survived stack revisions for energy and clarity.

Drop: Ashwagandha was pulled after morning flatness.

Too noisy: Confounded sleep windows stayed inconclusive.

Updated: Magnesium stayed, but the outcome moved off sleep.

InterventionStatusWhat was testedWhy the call
Magnesium glycinate 420 mgReassigned14 nights at therapeutic dose, sleep score primary outcomeSleep null. Vascular and autonomic arms moved. Kept the protocol, moved the verification outcome.
Ashwagandha 300 mg bedtimeDroppedDay 17 morning energy flat against textbook recovery markersCortisol blunting carried into the morning. Pulled it.
Thiamax (TTFD) 200-300 mgKeptEnergy and clarity arm, day 13 onwardStrong supportive signal. Survives stack revisions.
Nattokinase 12,000 FUKeptPart of P-004 BP cluster across 41 days146/102 to 121/86, physician-monitored. Stack held.
LactoferrinDroppedLowest impact lever at the start of the windowCut Day 5. Nothing earned its place.
CollagenDroppedSkin and connective tissue inputCut Day 2. Vitamin C supports endogenous synthesis. Redundant.
BaobabDroppedMechanism unclear at intakeCut Day 19. Unclear purpose disqualified it.
Extended fasting (24 to 48 h)DroppedLiver recovery and autophagy framingCut Day 13. Multi-model consensus said net negative for body recomposition.
Rucks (45 lb)DroppedApr 7 ruck vs Apr 14 walk, matched pace, paired H10Delta 0.8 bpm. Rucks reframed as anchor practice, intervals added.
Norwegian 4x4 intervalsAddedDay 41 Cardiac Rebuild Protocol launchedCardiac stimulus the rucks were not delivering. P-011b active arm.
Daily morning oral tempAddedCheap continuous monitor for thyroid toneDay 41 onward. Five dollars a day, replaces a panel as the gating test.

The drop column is what most products will not show you. Adding to the stack is easy. Pulling something is the harder move, and it is the one that earns the trust.

The coach was wrong; here's what the system updatedDay 33 / 2026-04-12 / INS-069

On my best night of the program, the system told me to rest. I told it why it was wrong. It changed.


Best H10 RMSSD of program
33.3 ms
Sleep duration
7.3 h, full parasympathetic descent
Subjective state
Sharp, energized, wanting to do more
Coach default
Sunday active recovery
User correction
Pushed back, cited individual data

The system absorbed the correction into how it reasons about me going forward. The product consequence is simple: a generic recovery score can no longer overrule personal evidence in non-clinical training decisions without explaining why. Rest recommendations now require named reason codes; no context-free scalar authority.

The pattern this names: composite recovery products can lean conservative without naming the reason. DN1 should support action only when the user's evidence supports it, and only inside the consumer training and recovery scope.


System updatedTier: REAL CONVERSATION (NARRATED)

See all evidence, including the nulls, the noise, and the drops

Three things compound. The founder dogfood data helped sort which levers appeared to move physiology. The conversation captured what mattered beyond the numbers: constraints, tradeoffs, subjective notes, and whether the plan fit the ordinary parts of the day. And the collaboration shaped a plan that survived contact with real life. No single tool we could find closed all three.

Day 1 to Day 90

What the learning looks like over time, including the things that didn't work.

  • Day 1
    The conversation

    You show up with something real. “I'm foggy at 3 PM.” “My doctor says my BP is high.” “I want energy left for my kids after work.” The coach asks the next right question. Everything you say is captured, not just the numbers, but what you are trying to make work.

  • Week 2
    Baseline forming

    You start building a personal measurement history: morning HR ranges, sleep architecture, and training response. At this stage the system can organize the evidence, not declare a stable baseline.

  • Day 30
    First hypotheses

    The system proposes something testable, on your data, not on a population. “Your evening HRV is consistently low. Let's test whether cutting caffeine after 2 PM changes that over the next ten days.”

  • Day 60
    First keep and first drop
    Signal
    Magnesium sleep null; ashwagandha morning flat; rucks Δ 0.8 bpm at matched pace.
    Reconciliation
    Decision ledger across 48 days: kept, dropped, reassigned, added.
    Evidence tier
    Reassigned / dropped
    Tomorrow's plan
    Keep magnesium, but verify vascular/autonomic arms. Pull ashwagandha. Drop rucks as cardiac base and add intervals.
  • Day 90
    Reviewed patterns and one inconclusive

    Some interventions may have enough measurements to keep, drop, or reassign. At least one may still be too noisy to call. The system says that out loud and names what would close the question.

  • Ongoing
    Life changes, the plan stays editable

    You tell the system you'd rather do push-ups between calls than block 45 minutes for the gym. The plan can be revised around that constraint. You miss a day. The system keeps the context, protects the anchor practice, and drafts the next executable move without pretending the original plan still fits.

What this is and isn't

What it isn't
  • Not a tracker. Trackers tell you what happened. DN1 tells you what to do about it.
  • Not a score. No morning recovery reveal. No traffic lights. The coach absorbs the numbers; you see the plan.
  • Not a wellness AI. AI is implementation. The product is personal evidence.
  • Not a chat over your data. Stateful and longitudinal. Facts that matter persist with provenance. Nuance decays. You do not restart from zero.
  • Not a diagnosis tool. It engages with prescriptions and clinical findings; it does not replace your doctor.
  • Not a clinician override. It supports consumer health and fitness decisions alongside care; clinician instructions, symptoms, and safety red flags win.
What it is
  • A continuous coach that keeps personal evidence tied to the question you chose.
  • A personal record that compounds with every signal you give it.
  • An evidence ladder that bounds what the coach is allowed to say.
  • A system that can ingest blood work, track biomarker context, and flag when a changed number should change the question.
  • A system willing to say “we don't know yet” and “we tried; it didn't work.”

You're already paying for the experiment.

Most people in this audience already spend $200 to $500 a month on supplements, devices, peptides, lab panels, sometimes a coach. The cost isn't the question. The question is which of those parts is earning its place.

Paid pricing and refund terms are not live yet. The current public position is a planned offer, not an active price or guarantee claim.

Planned paid offer
Final price, annual terms, and refund policy will be published before paid launch

See the pricing argument

Join the waitlist

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Frequently asked

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