How much sleep do you owe?
Sleepgoody adds up the sleep you've missed, then tells you exactly how long to sleep tonight to get back on track. Whatever your hours.
Free to download. The calculator needs no signup and takes about a minute.
It takes about ten seconds a day
No setup, no questionnaire, no wearable needed.
Tell it how long you slept
That's the whole input. One number, once a day — last night's hours.
See what you're down
Your shortfall across the last seven nights, as one figure. Not a wall of graphs to interpret.
Sleep tonight's number
"Sleep 9h 54m and you're back on track." Do that, and tomorrow's number comes down.
Most sleep apps show you charts.
Sleepgoody answers the question that actually changes anything: how do I catch up?
See what you owe
Your sleep debt as one number, plus a score and a streak for every night you hit your goal.
Ask the coach
"Why am I so tired?" It can see your real numbers and answers with one thing to do tonight.
Find what's costing you
Late screens, caffeine, stress — worked out from your own nights, not generic advice.
The night you don't remember still counts
Nobody tracks the hour they lost on a Tuesday. It's the run of them that catches up with you. Put last night in and Sleepgoody keeps the total — what you're down, and what tonight needs to be.
Try the free calculatorWe asked night shift workers how much sleep they actually get
More than 20 nurses, carers and shift workers told us what they really sleep between shifts. The average was 5.6 hours a night — and whether that ever gets paid back came down to the rotation they were on. Read what they said.
What's free, and what isn't
The part that answers "how much do I owe, and what do I do tonight" costs nothing.
Free
No account, no card.
- Your sleep debt, score and streak
- Tonight's recovery plan
- Three coach questions a day
- The web calculator, no signup
Pro
7 days freeOr $39.99 a year — works out a third cheaper.
- Everything in Free
- Ask the coach as much as you like
- Pulls sleep from Apple Watch, Oura, Fitbit and more
- What's coming, and what the missed sleep is costing you
- Bedtime reminders on the nights you actually need them
- Everyone in the house in one place
Get your number tonight
Sleepgoody is on the App Store. Or start with the free calculator and see what you owe first.