01streams
sleep_score8.2 hours
deep_work4.5 hours
entry_speed<10s daily log
Custom Metric Log
Track any daily variable.
Create numerical, boolean, or scale-based streams with rapid daily entry for sleep, caffeine, focus, or mood.
metricblend — empirical personal correlation
Stop guessing.
prove your leverage.
Log any daily variable and calculate Pearson correlations (r) across 0–7 day lag offsets to discover your real personal leverage. Stop guessing.
metricblend.stardustpath.com — Live StudioPEARSON ENGINE
sleep_vs_focusr = +0.78
Strong positive linear relationship confirmed (p < 0.001). Peak correlation achieved at +1 day lag shift.
Optimal Lag Window
+1 Day Lag Shift
Hypothesis Vault
Pre-registered
✓ Private Browser StorageZero Telemetry
Pearson r
linear correlation algorithm
0–7 Days
multi-day lag offset window
100%
local vault data privacy
The Danger of Placebo Self-Help
Health trends lie. Correlation math doesn't.
Guesswork Habit Apps
- ✕Attributing daily energy to recent supplements without statistical proof.
- ✕Ignoring 24-168 hour delayed lag effects that manifest days later.
- ✕Falling victim to post-hoc confirmation bias when evaluating routine changes.
The MetricBlend Solution
- ✓Calculates mathematical Pearson r linear correlation coefficients (-1.0 to +1.0).
- ✓Multi-day lag engine uncovers delayed lifestyle impacts across 0–7 day windows.
- ✓Pre-registration vault locks in hypotheses before tracking data.
How MetricBlend Works
3 steps to empirical proof.
01
Log Any Daily Variable
Create custom metric streams (sleep, caffeine, workout, mood, focus) with 10-second daily entries.
02
Calculate Pearson r Matrix
MetricBlend computes mathematical linear correlation coefficients (-1.0 to +1.0) across all your variables.
03
Uncover 0–7 Day Lag Offsets
Discover delayed lifestyle impacts that show up 24 to 168 hours after the input occurred.
Capabilities
Correlation over speculation.
02math engine
sleep vs focusr = +0.78
caffeine vs sleepr = -0.62
significancep < 0.001
Pearson r Correlation
Empirical proof.
Calculates mathematical linear correlation coefficients (-1.0 to +1.0) and p-values to prove true causation vs. placebo.
03lag engine
lag_offset_0dr = +0.32
lag_offset_1dr = +0.81 (peak)
lag_offset_2dr = +0.45
0–7 Day Lag Shift
Uncover delayed effects.
Calculates correlation shifts across 24 to 168-hour offsets to discover how yesterday's choices impact today's energy.
04hypothesis
hypothesis_idhypo_2026_04
lock_timestamppre-registered
validationhypothesis confirmed
Pre-Registration Vault
Prevent post-hoc bias.
Lock in hypotheses before tracking data to maintain scientific integrity and prevent confirmation bias.
05sync
flow_spend_dailysynced 100%
ink_words_writtensynced 100%
privacylocal encrypted
Flow & App Sync
Unified personal data.
Pulls spending data from Flow and writing history from Island Ink to correlate finances and study habits against focus.
FAQ
Everything you need to know.
Transparent Pricing
Simple, honest plans.
Free Studio
Discover My Real Leverage Free →$0
Up to 3 active metric streams, basic Pearson r correlation matrix, 0-1 day lag offset view, and CSV export.
Pro Studio
Get Pro Access Now →$7.99 / mo
Unlimited metric streams, full 0–7 day lag offset analytics, pre-registration hypothesis vault, and Flow/Island Ink sync.