Every tool, in one place.
A complete catalog of every calculator, simulator, and interactive instrument across all four LifeByLogic labs. Each runs in your browser. Nothing is stored. Everything is free.
Brain Age Index
Estimate your brain's biological age from 17 evidence-based factors. Built on the 2024 Lancet Commission and UK Biobank research (n=38,967).
Sleep-Cognition Optimizer
Your personalized sleep schedule from chronotype science and 90-minute cycles. UK Biobank study of 224,714 adults.
Cognitive Load Calculator
Measure your current mental bandwidth and identify the biggest drains. Based on Sweller's Cognitive Load Theory.
ADHD Screener (Adult)
Evidence-based self-screening using the validated WHO Adult ADHD Self-Report Scale (ASRS-v1.1).
Should I Quit My Job?
9-factor decision simulator combining compensation, burnout (Maslach-based), career trajectory, financial runway, and opportunity cost.
Career Switch ROI
Model the 5-year financial and career trajectory of switching fields — salary curves, reskilling costs, seniority reset.
Grad School Worth It?
NPV analysis of a graduate degree — tuition, foregone earnings, salary lift. MBA, MS, PhD, MD, JD, MPH paths.
Big Move Simulator
Should you relocate? Models cost of living, tax differential, career access, social capital loss, and hedonic adaptation.
Side Hustle Viability
Realistic break-even timelines for a side project — capital, hours, customer acquisition, probability of going full-time.
Cognitive Bias Detector
Describe any decision or paste an argument. Returns the three most likely cognitive biases at play, with Kahneman-based counters.
Habit Architect
Design a habit that sticks — using Duhigg's cue-routine-reward loop and Fogg's Tiny Habits framework.
Sunk Cost Calculator
Am I staying because it's right, or because I've invested too much? Structured walk-through that reframes the decision fresh.
Persuasion Scanner
Paste any ad or sales pitch — scanner identifies Cialdini's six weapons of influence being used on you.
Procrastination Diagnostic
Procrastination is rarely laziness — the diagnostic identifies which of six drivers is yours and matches it to evidence-based interventions.
Life Score Calculator
Composite score across 7 life domains, measured with validated psychometric instruments (PHQ-9, GAD-7, WHO-QOL-BREF).
AI Correlations
Upload your sleep, mood, or productivity data. Finds non-obvious correlations hiding in plain sight. Local-first.
Goal Tracker
Structured goal framework built on Gollwitzer's implementation-intentions research. Tracks what matters, not everything.
Year in Review
Guided annual retrospective structured around evidence-based reflection practices. Produces a decision brief for the year ahead.
Habit Chain
Streak tracker with a difference: it tracks the conditions around your habits, so when a streak breaks, you see why.