Planning Guides
Free, data-driven guides to help you plan smarter across personal finance, technology, and wellness.
How to Calculate Your Financial Runway
Learn how to determine exactly how long your savings will last, factoring in monthly expenses, inflation, and investment returns. Covers the 4% rule, sabbatical planning, and FIRE scenarios.
Understanding Battery Runtime
Master mAh, voltage, discharge curves, and Peukert's Law. Practical guidance for IoT sensor optimization, drone flight time estimation, and off-grid power planning.
Caffeine and Sleep Science
Understand how caffeine half-life affects your sleep quality. Learn how genetics, medications, and pregnancy influence caffeine metabolism and find your ideal daily cutoff time.