Align your physiology.
Decide with more certainty.

Wearable analytics for founders, leaders, and teams who can't afford bad decisions.

WHOOP Oura Ring Apple Watch Decision Readiness Decision Accuracy Evening Reflection Decision Journal Built in Stockholm WHOOP Oura Ring Apple Watch Decision Readiness Decision Accuracy Evening Reflection Decision Journal Built in Stockholm

The problem

35,000 decisions
a year.

Most leaders fly blind, risking strategic pivots and key hires on impaired biology. Evity Club quantifies the invisible tax on your judgment, showing individual and team readiness side by side.

Stop mistaking failures of physiology for failures of talent.

You are not operating at a constant level

Your cognitive capacity fluctuates daily. Wearable data lets you see those fluctuations objectively, not just feel them vaguely.

The gap between self-perception and reality

Evity Club asks you to rate yourself before showing your score. Over time, you learn how well you read your own readiness, and where you consistently misread it.

Patterns most people never see

Which days of the week are you sharpest? What does a high-stress week do to your score three days later? Your data answers these questions specifically for you.

How it works

Your Decision Readiness score

A single number, 0 to 100, built from your personal baseline. Not a population average. Not a generic formula. Yours.

Sleep

The foundation of cognitive performance. Duration, consistency, and timing are captured every night by your wearable and compared against what is normal for you.

HRV

Heart rate variability is your nervous system's daily report. It reveals how well you have recovered before the day begins, and it shifts more than most people expect.

Resting heart rate

One of the earliest signals of stress and fatigue. Often visible in your data a full day before you consciously feel it. Measured against your personal baseline, not the average.

80+ Strong

60 to 79 Good

40 to 59 Fair

Below 40 Rest

The research

Your body knows
before you do.

Evity Club is built on three bodies of peer-reviewed research. Not wellness trends. Not self-help. Science that has been replicated.

Six hours is not fine

A single night at or below six hours impairs cognition to the same degree as mild alcohol intoxication. Most people cannot detect this in themselves. Your wearable can.

Most experts are overconfident

In Tetlock's 20-year study of 80,000 predictions, most experts barely outperformed chance. The ones who improved tracked their accuracy honestly and updated their thinking after being wrong.

Reflection beats more planning

A structured two-minute nightly review improves decision quality more than extending planning sessions. The feedback loop, not more planning, is what builds judgment.

Features

Everything in one place

Built for how high-stakes professionals actually work. Fast mornings, decision-heavy days, and the discipline to keep improving.

Teams

See when your team is collectively in the green. Useful for board meetings, high-stakes pitches, and decisions that need everyone sharp. Individual data stays private. Only aggregated team readiness is shared.

Example: Leadership team

Average readiness, Mon to Fri

Mon

Tue

Wed

Thu

Fri

Tuesday is this team's strongest window. Front-load high-stakes calls. Protect Wednesday for deep work.

Individual scores are never visible to teammates. Only aggregated data is shared.

Decision Accuracy

Log high-stakes decisions before you make them. Set a confidence level. When the outcome is clear, close the loop. Over time, your accuracy score shows whether your confidence matches reality, the same method used by the world's top forecasters.

Evening Reflection

One question at the end of each day: what would you do differently? Thirty seconds. Compounded over a year, it changes how you operate.

Insights

Pattern detection that runs on your data. Which day of the week are you sharpest? What does alcohol the night before do to your score? Answers specific to you, not generic advice.

Shareable Score Cards

Export your readiness as a clean score card. Share your personal results, your team's weekly pattern, or an investor view showing how you operate over time. Your data, presented the way you choose.

Data residency

Stored on servers in Frankfurt, EU. Fully GDPR compliant.

End-to-end encryption

Journal and decision entries are encrypted on your device. Only you hold the key.

Never sold

Your health data is never sold or shared with third parties. Ever.

Your data, your exit

Export or permanently delete everything from within the app at any time.

Decision Accuracy

Stop guessing.
Start auditing.

Most performance tools tell you how you feel. Evity Club is the only one that tracks whether your confidence was justified.

Log a high-stakes call before you make it. Set a confidence level. When the outcome is clear, close the loop. Over time, your Decision Accuracy score reveals the physiological conditions under which your judgment is sharpest, and when it isn't.

No other wearable app correlates biometric readiness with actual decision outcomes. That gap is your edge.

Decision log

Extend runway by 6 months

Confidence: 75% · Readiness: 81

✓ Correct

Hire VP Sales ahead of Series B

Confidence: 85% · Readiness: 44

✗ Incorrect

Pass on the acquisition offer

Confidence: 60% · Readiness: 73

Pending

Decision Accuracy score

73%

Your moat is your data

The world's best forecasters don't guess better by instinct. They track their accuracy and update their models. Evity Club gives you the same feedback loop, calibrated to your physiology.

Integrations

Works with the
device you already own

Connect WHOOP, Oura, or Apple Watch. Evity Club imports your history on the first sync, so your score is available immediately. No waiting period for existing device owners.

Evity Club is not affiliated with, endorsed by, or sponsored by Apple, WHOOP, or Oura. All brand names and logos are trademarks of their respective owners.

Apple Watch

Series 4 and later · HealthKit

Live

WHOOP

4.0 and later · HRV · Recovery

Live

Oura Ring

Gen 3 and later · Sleep · Readiness

Live

About

The Club

"I built Evity Club because I kept watching high-performing people make poor decisions. Not because they lacked skill or conviction, but because they were running on empty without knowing it."

Philip Gratell

Founder · Performance Advisor for Founders · Stockholm

Our mission: to give founders and professionals the performance infrastructure their ambitions require.

Evity Club is more than an app. We are building a community of founders, executives, and leaders who take performance seriously. First meetups coming in 2027.

Join us on Strava

A private club for founders and professionals who train.

Pricing

Start free. Stay sharp.

14 days free. Cancel any time. No commitment.

Monthly

€9.99

per month

Decision Readiness score
Decision Accuracy tracking
Evening Reflection
Decision Journal
Insights and pattern detection
Teams
Shareable score cards
WHOOP, Oura, Apple Watch

Start free trial

FAQ

WHOOP, Oura Ring, and Apple Watch are all supported. If you use multiple devices, Evity Club lets you choose your primary source so your data stays unified in one place.

The score combines sleep, HRV, and resting heart rate, all measured against your personal rolling baseline rather than a population average. The more data Evity Club has from your wearable, the more accurate your score becomes.

Yes. All data is stored on servers in Frankfurt, EU, fully GDPR compliant. Journal and decision entries are encrypted on your device before they reach the server. Only your device holds the decryption key. We never sell data to third parties, and you can export or permanently delete everything from within the app at any time.

Yes. Evity Club requires at least one connected wearable to generate your score. If you already own a WHOOP, Oura, or Apple Watch, your historical data is imported on first sync and your score is available immediately. New device owners go through a short calibration period before the score unlocks.

Evity Club is built for anyone who makes high-stakes decisions under pressure, whether you are a founder, an executive, an investor, or a team leader. If the quality of your judgment matters, Evity Club is for you.

You can cancel at any time from the App Store or within the app settings. You keep full access until the end of your current billing period. Your data is retained for 30 days after cancellation and can be exported or permanently deleted at any time.

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