The Sleyp iOS app is coming soon
Your sleep
environment.
A personalised sound environment, built around the room you actually sleep in, so the bin lorry, the letterbox and the neighbour's drill stop arriving as events.
- Free in your browser
- Nothing to download
- iOS app coming soon
Tonight's mix
Afternoon, quiet street
- Rain, steady72
- Brown noise54
- Cabin hum31
- Wind, distant18
Sleep timer
1:24:00
Wake-up fade-in
14:15
Forty years on the shift floor
- The King's Regiment
- Jacobs Biscuits
- HM Prison Service
- Budweiser UK
Why Sleyp exists
The street doesn't care that you finished at 7am. Sleyp builds the room around the sleep, not the sleep around the room.
13
Sounds to mix
Brown, pink and white noise through to rain, ocean, forest and campfire, mixed live in your browser. Free, with nothing to download.
0
Hard stops
The timer fades out rather than cutting to silence, so the end of the sound never becomes the thing that wakes you.
22
Free sounds in the app
The Sleyp iOS app is coming soon with 22 free library sounds and saved mixes, even without an account.
Try sounds
Build the room around the sleep.
Mix 13 sounds, save the mix, and set a timer that fades out rather than stopping dead. Free in your browser, with nothing to download.
Try sounds- 01Brown, pink and white noise, plus rain, ocean, forest, campfire and more
- 02A slider for each of the 13 sounds, so you set the mix
- 03Save mixes in this browser and bring them back after every shift
- 04A sleep timer that fades out, with an optional wake-up chime
Before the room, the rota
What is your rota doing to you?
Every shift pattern hits the body clock differently. Pick yours and see the baseline impact, rota adaptation, typical weekly sleep debt and fatigue risk, before any countermeasures.
58/100
6h
unmanaged baseline
High
without countermeasures
The 4-off block is your recovery weapon, but only if the first off-day is a managed flip, not a write-off.
The tools
Specialist tools, not generic advice.
Five calculators engineered for the realities of shift work: commutes, caffeine timing, flip-flop weekends, noisy daytime streets and mismatched body clocks.
Night Shift Recovery Calculator
Your personal post-shift countdown to quality daytime sleep.
Open calculatorRota Flip-Flop Calculator
Land your body clock safely back into family weekends.
Open calculatorSleep Debt & Fatigue Logger
See your missed hours stacking up before they flatten you.
Open calculatorNoise Calibration Tool
Match your daytime noise problem to the right masking defence.
Open calculatorChronotype & Rota Matcher
Find out how your natural body clock fits your shift pattern.
Open calculatorThe framework
One number for how your rota is really going
The Sleyp Score is built from rota adaptation, noise impact, circadian recovery and accumulated sleep debt.
72
Example score
Where this comes from
“Advice written for 9-to-5 sleepers collapses on contact with a 4-on/4-off rota.”
Forty years of high-intensity shift work: the King's Regiment (1986–1989), industrial night production at Jacobs Biscuits, high-security landings with HM Prison Service at Strangeways, Walton and Guys Marsh, and heavy logistics shifts at Budweiser UK. Everything in Sleyp is built from what actually works when the alarm goes off at 4:45pm and the street outside is wide awake.
1986–1989
The King's Regiment
Soldier
Jacobs Biscuits
Industrial manufacturing shifts
HM Prison Service
High-security settings. Strangeways, Walton, Guys Marsh
Budweiser UK
Heavy logistics & industrial production
The shop
The kit that earns its place
Blackout blinds, moulded earplugs, sleep masks and noise machines, chosen for people who sleep days, not for gadget lovers.
- Blackout blinds
- Moulded earplugs
- Sleep masks
- Noise machines
The app
Take Sleyp with you
The Sleyp iOS app is coming soon with 22 free library sounds and saved mixes, even without an account. Sleyp Plus adds AI mix generation and Discovery. Try Sleyp free in your browser while you wait.
Questions
Frequently asked questions
Straight answers about what Sleyp is, who it is for and what stays free.
What is Sleyp?
Sleyp helps you sleep against the noise. Mix sounds like brown noise, rain and ocean waves, set a timer that fades out, and save the mixes that work for your room. You can try it free in your browser today, and the Sleyp iOS app is coming soon. Alongside it sit calculators and trackers built for rotating and night rotas.
Who is Sleyp for?
Anyone sleeping against the clock: 4-on/4-off patterns, rotating days and nights, permanent nights, early starts, splits and on-call rotas, from prison officers and nurses to warehouse, factory and logistics crews. It works just as well for anyone on a loud street.
Is Sleyp free?
Yes. The browser version, every calculator and the whole resource hub are free. The Sleyp iOS app is coming soon with 22 free library sounds and saved mixes without an account. Sleyp Plus adds AI mix generation and Discovery.
Is there a Sleyp app?
The Sleyp iOS app is coming soon to the App Store, with 22 free library sounds, saved mixes without an account, and Sleyp Plus for AI mix generation and Discovery. Until then, you can try Sleyp free in your browser.
Are the browser sounds the same as the app's?
No. The browser version has 13 sounds generated live in your browser. The app has its own library of 22 sounds. The app's sounds don't play on the website, and sounds with similar names are not identical.
Your sleep. Your sound. Your mix.
Free in your browser, tonight. Nothing to download, no account needed.