Tools built for the rota you actually work

Every calculator here answers one hard, specific question shift workers ask, when to cut caffeine, how to flip back for the weekend, how much debt you're carrying, what noise defence to deploy, and whether your body clock fits your pattern.

Night Shift Recovery Calculator

Enter your shift end time and commute, and get precise countdowns for light exposure, caffeine cut-off and winding down, so your body clock works with you, not against you.

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Rota Flip-Flop Calculator

Coming off your final night shift and need to be human by Saturday afternoon? This calculator builds your exact transition plan, anchor sleep length, wake time, light exposure and the first proper night sleep.

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Sleep Debt & Fatigue Logger

Log actual sleep against your personal requirement across a rolling shift block, and watch your accumulated sleep debt and projected fatigue level, before it becomes a safety problem.

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Noise Calibration Tool

Rate the noise sources around your daytime sleep (traffic, neighbours, kids, deliveries) and get a calibrated masking plan: which noise colour, what volume strategy, and which physical defences to layer.

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Chronotype & Rota Matcher

Answer a short set of questions about your natural sleep tendencies and current rota, and see your chronotype, your rota compatibility score, and the specific adjustments that make a mismatched pattern survivable.

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