Classic Pomodoro uses fixed 25-minute blocks. Your actual focus capacity isn't fixed — it shifts with sleep, stress, task type, and time of day. Adaptive Pomodoro tunes itself to you in real time.
Start at 15 minutes of work / 5 minutes of break. After each block, rate it 1–5. The next block of the same type grows or shrinks to match:
Work: 1 way too hard −10 min · 2 too hard −5 · 3 just right 0 · 4 too easy +5 · 5 way too easy +10.
Break: inverted — low numbers mean "too short" and grow it, high numbers mean "too long" and shrink it (±1–2 min).
Over a few sessions you naturally hover at your sweet spot for that moment. If you're wiped out, the timer shortens. If you're locked in, it stretches. No arbitrary 25-minute rule.
Extras: click the timer to set a custom duration, tap +1 min mid-session when you're in the zone, or hit Stop Early to end without affecting your next block's length. Hide everything while I focus blacks out the screen entirely.
Rate your focus from 1 to 5.