Focus & Energy Tools
Free, practical calculators for getting your head in the game and keeping it there — plan focus sessions, clear sleep debt, time your caffeine, budget deep work, track a habit, and ride your natural energy cycles.
Focus Session & Pomodoro Planner
Plan a run of focus sessions with short and long breaks — see your total focus time, break time, the focus ratio, and when you'll finish.
Sleep Debt Calculator
Add up a week of nightly sleep against what you need to see your accumulated debt, your nightly average, and how many nights it takes to recover.
Caffeine Timing & Half-Life Calculator
See how much caffeine is still in your system at bedtime, how long a dose takes to clear to a sleep-safe level, and the latest you should have it.
Deep Work Time-Budget Planner
Turn your desk hours into a realistic weekly deep-work budget — a sensible daily share, capped at a ceiling and split into protected blocks.
Habit Consistency Tracker
Turn days completed and elapsed into an adherence percentage, then see what it takes to hit your target — and whether it's still reachable.
Ultradian Energy-Cycle Planner
Fit your day to the body's ~90-minute waves of focus and fatigue — whole focus-then-rest cycles across your window, with a scheduled timeline.