Features

Everything Stack Almanac does

An AI-powered supplement advisory platform that learns what works for your body. Advisor first, tracker second.

Your AI Advisor

Conversational AI guidance that knows your supplements, your goals, and how your body actually responds.

2 features

Almanac Advisor

A conversational AI supplement advisor that knows what you take, how consistently you take it, your health data, and your goals. Not a generic chatbot. Every answer is personalised.

  • Full personal context in every conversation: your supplements, consistency, outcome trends, health data, interactions, bloodwork, and personal profile
  • One-tap Quick Actions: the advisor suggests changes you can apply immediately (add, remove, adjust dose, change timing, start a trial)
  • Dynamic conversation starters generated from your actual data triggers
  • Cross-conversation memory: follows up on its own recommendations
  • Powered by Claude Sonnet (fast) and Claude Opus (deep analysis, bloodwork interpretation)
How the Advisor works

Natural Language Setup

Paste your supplements in plain text and AI organises them with doses, forms, and optimal timing. Full setup in 30 seconds.

  • Type or paste supplements in any format. The AI handles the structure
  • Matched (green), ambiguous (amber), and unmatched items shown for confirmation
  • Time blocks auto-assigned by supplement type and context clues
  • Instant interaction checking on day one before any logging
Set up your supplements in 30 seconds

Track Everything

Log supplements across any device or channel without building a daily habit around it.

5 features

Effortless Tracking

Only log when something changes: a missed dose, a new supplement, a different time. Your regular supplements are assumed taken by default. No daily checklists.

  • Three-state model: confirmed (tapped), assumed (auto-marked after 2-hour window), skipped (explicit)
  • Daily interaction can be as simple as reading one reminder and doing nothing
  • Retroactive editing up to 48 hours back
  • Optional skip reasons for richer data (ran out, stomach issues, forgot)
  • Weighted data feeds your personal insights. Assumed data contributes less than confirmed
Track less, learn more

Bottle Scanner

Take a photo of any supplement bottle. AI vision identifies the brand, supplement, dose, and form, then adds it to your list in one tap.

  • Powered by Claude Vision API for label reading and identification
  • Extracts supplement name, brand, dose, form, and ingredients
  • Matches against the catalogue for structured data entry
  • Works via Telegram photo messages too
  • 3 free scans per day on free tier, unlimited on Pro
How the Bottle Scanner works

Telegram, WhatsApp & SMS

Track supplements, check your schedule, log metrics, and ask the AI advisor, all from the messaging apps you already use. No need to open the app.

  • Full command set: view supplements, mark blocks done, skip, log metrics, ask the advisor
  • Time-block reminders, morning overviews, and weekly digests
  • Exception-based logging works via messaging. No reply means everything was taken
  • Photo bottle scanning on Telegram
  • Connect in 30 seconds with a 6-digit code
Messaging integration guide

Push Notifications

Reminders that work even when the app is closed. Supports iOS Safari, Android, and desktop. Telegram and WhatsApp integration for messaging-based reminders.

  • Native push notifications on iOS Safari (17.4+), Android, and desktop browsers
  • Time-block reminders: morning, midday, evening, and bedtime
  • Telegram and WhatsApp reminders for users who prefer messaging apps
  • Smart scheduling: reminders adjust to your actual routine timing
  • One-tap confirm or skip directly from the notification

Update My Supply

Tell Stack Almanac how many pills or days you have left at any point mid-bottle. No need to wait for the restock flow. Pill counts convert to days automatically using servings-per-dose, and low-stock status plus notifications update instantly.

  • New row in the Tracking section of every supplement detail drawer
  • Enter pill count or days remaining. Pill count auto-converts using servings-per-dose
  • Instantly recalculates depletion date and updates low-stock status
  • Restock notifications pick up the new estimate on the next tick
  • Works mid-bottle without breaking the running supply history

Understand Your Body

Connect what you take to how you feel — and see the patterns your data reveals over time.

6 features

Personal Insights

Compares how you feel on days you take a supplement versus days you skip it, surfacing personal patterns that generic research can't capture.

  • Tracks 6 outcome metrics (energy, mood, sleep, focus, stress, overall) and 3 health metrics (sleep hours, HRV, resting HR)
  • Progress page opens with a "What's working" verdict card showing your top correlation in plain English, plus a calendar view and a full weekly summary page with interpretation thresholds for each metric
  • Three-state accuracy: confirmed (100% weight), assumed (50%), skipped (100%) prevents false correlations
  • Combination discovery: finds supplement pairs that work better together from your data
  • Cycle-phase correlations for menstrual cycle tracking users
  • Minimum significance thresholds filter out noise
How the Correlation Engine works

Made for Your Body

Tailored to you, not a hypothetical average adult. Dosing adjusted for your sex, age, and cycle. Diet-aware suggestions. Medication interaction checking.

  • Progressive personal profile collection, never a wall of forms. Collected in layers over time
  • Sex-specific recommendations: iron dosing, creatine, hormonal timing
  • Cycle-aware timing: adjusts supplements by menstrual phase (magnesium/B6 in luteal, iron post-menstruation)
  • Genetic variant awareness: MTHFR, COMT, VDR, APOE, CYP1A2 inform form and dose recommendations
  • Diet-aware gap analysis: vegan B12/iron/omega-3/creatine, keto electrolytes
  • Medication interaction layer with severity levels and spacing requirements
Why your dose should be unique

Stack Impact

Pro

For Oura Ring users on Pro, Stack Impact compares your wearable metrics from before and after you started each supplement, so you can see what is actually showing up in your data.

  • Before and after comparison for sleep duration, HRV, readiness score, steps, and active calories
  • Clinical cards (RCT-backed) for magnesium glycinate, ashwagandha KSM-66, and melatonin
  • Observed cards (mechanism-based) for omega-3, L-theanine, and creatine
  • Requires 3 weeks of data and an Oura Ring connection
  • Combined card shown when two supplements overlap on the same metric
  • Oura data syncs automatically every night, no manual refresh needed
See your supplements in your Oura data

Meal Tracking

Pro

Log what you eat in natural language. Stack Almanac detects food-supplement interactions and surfaces timing conflicts automatically.

  • Type meals in plain English. AI parses ingredients, portions, and nutrients
  • Food-supplement interaction detection: calcium-rich meals blocking iron absorption, grapefruit affecting drug metabolism, and more
  • Fasting window tracking with automatic supplement timing adjustments
  • Nutrition gap detection highlights where your diet falls short and supplements can help
  • Timing conflict alerts when meals interfere with supplement absorption windows

Condition-Based Routines

Evidence-based supplement combinations for specific health goals: focus, sleep, energy, mood, gut health, and more. Includes medication pairings to watch for and swap suggestions.

  • Curated routines for common goals: deep sleep, sustained energy, mental clarity, gut repair, stress resilience
  • Each routine includes dosing, timing, and evidence summaries
  • Medication pairings to watch for flag combinations worth checking before you start
  • Swap suggestions when a supplement in a routine conflicts with something you already take
  • One-tap adopt: add an entire routine to your supplement list with correct timing

Daily Score

A daily 0-100 score that reflects how well your supplement routine is working: are you taking everything, at the right time, without conflicts, and consistently?

  • Completeness (25%): coverage of essential supplement categories + routine breadth
  • Timing (20%): penalises timing violations (stimulants at night, sedatives in morning)
  • Pairings (20%): penalises conflicts, rewards pairing boosts
  • Consistency (25%): 7-day weighted average with three-state weighting
  • Bio Match (10%): how well your routine fits your individual biology

Manage Your Routine

Smart scheduling, interaction checking, restocking alerts, and a community of tested supplement plans.

6 features

Timing Intelligence

A rule engine that flags timing violations and suggests optimal scheduling based on supplement mechanisms, half-lives, and interactions.

  • Flags stimulating supplements taken after dinner
  • Warns about fat-soluble vitamins taken on empty stomach
  • Identifies absorption competition between supplements in the same time block
  • Prioritised tips: high, medium, and low urgency
Complete supplement timing guide

Pairings Database

Curated database of supplement-supplement and supplement-medication pairings with severity levels, evidence grades, and spacing requirements.

  • Types: conflict, absorption block, spacing required, absorption boost, pairing boost
  • Severity levels: major, moderate, minor
  • Evidence grades (A-F) based on systematic reviews, RCTs, cohort studies, case reports
  • Medication pairings cross-referenced against your personal profile
  • Injected into AI advisor context for every conversation

Smart Restock

Pro

End-to-end restock experience: push alerts when you're running low, an adherence card showing your actual consistency before you buy, regional pricing from trusted retailers, and a shareable shopping list.

  • Push notifications when supplements hit Critical or Depleted status (Pro)
  • Adherence card: personal take-rate over 6 weeks shown before the buy CTA
  • Adherence-aware days-remaining estimate based on actual logging rate
  • Regional geo-routing: offers filtered by country (UK, US, EU, Global)
  • Shareable restock list via Web Share API with copy-to-clipboard fallback
  • Days-supply capture on scan: quick-select or auto-suggest from label
  • Restock section in weekly digest with geo-aware buy links
  • Per-supplement restock alert toggle in supplement detail modal
  • Alert thresholds: warning (14 days), low (7 days), critical (3 days)
  • Cost comparison across retailers (iHerb, Amazon, Bulk, Thorne, and more)
  • Trust-first: affiliate links only on restock, never on new recommendations
How Smart Restock works

Community Routines

Browse, copy, and publish supplement routines. Discover what experienced users take, read reviews, and adopt a routine with one tap.

  • Publish your routine as a public template with rationale and goals
  • Copy any community routine and customise it for yourself
  • Star ratings and detailed reviews per routine
  • Creator dashboard with adoption counts and engagement analytics
  • Routine versioning: updates notify adopters who can sync changes
  • Share a direct link to any community routine or preset and it loads automatically into onboarding, ready to adopt in one tap

Health Integrations

Connect wearable devices to bring in steps, sleep, HRV, and resting heart rate, giving the advisor and insights engine richer data to work with.

  • Apple Health, Oura Ring, Whoop, and more via Terra API
  • Automatic daily health data sync
  • Health metrics feed directly into correlation analysis
  • AI advisor references your health data alongside supplement data

Weekly Summary Emails

A weekly email summarising your supplement routine. What changed, how consistent you were, and a personalised AI insight. Delivered Sunday morning.

  • Routine changes: added, removed, adjusted supplements
  • Adherence stats with streaks and consistency breakdown
  • AI-generated personalised insight from your week's data (Claude Haiku)
  • Metric trend arrows for energy, sleep, mood, focus
  • GDPR-compliant: explicit opt-in, granular category controls, one-click unsubscribe
Git release notes for your biology

Ready to try it?

Every feature is available during your 21-day Pro trial. No credit card required.

Get started free