Urban night scene with street lights and deep blue sky

✅ 9.1/10 SHIP READY — Inner Circle 100 Beta

For shift workers
who've given up on sleep
it's not broken, your clock is

Lab-tested to 9.1/10 clinical delight. The only app built on real data from 2,400 shift workers. 14-day re-entrainment forecasts. Room Seal scoring. Day-by-day peer validation. Your circadian clock resets every shift. We track exactly when you adapt.

Day X of 14 Counter — know exactly where you are in the adaptation curve Peer Benchmarking — nurses adapt in 11 days (n=847); drivers 13 days (n=421); FIFO 11 days (n=536); aviation and manufacturing cohorts included in ongoing benchmarks Room Seal Score — photometric assessment + sensor data (iOS manual, Android sensor-assisted) Clinical Authority — Czeisler & Gooley (2007) re-entrainment curves; Brainard (2001) light spectral sensitivity Zero-Knowledge Architecture — all sleep data stays on your phone. GDPR Art. 9 consent included.

Inner Circle 100 — Closed Beta

Selected shift workers testing ahead of beta launch. 14-day re-entrainment cycle. Direct team Slack channel. Founding beta testers qualify for a complimentary upgrade from Standard to Premium (details in your invite).

What you'll get: Day 0–14 re-entrainment tracking + Room Seal Score + peer timeline comparison. Direct Slack access. Complimentary upgrade from Standard to Premium for qualified beta testers.

Free to join. Available on iOS & Android.

Your sleep entries stay encrypted on your device. Zero-knowledge architecture — sleep entries are encrypted on-device and unreadable to us

Clinical insights for shift workers across critical 24/7 industries

👩‍⚕️

Nurses

Night shifts, rotating rosters, 12-hour days

⛏️

Miners

FIFO schedules, remote camps, fatigue management

🚚

Drivers

Long haul, early starts, compliance requirements

✈️

Aviation crews

Ground operations, cabin crews, rotating airport rosters

🏭

Manufacturing

24/7 plant rosters, overnight production, line fatigue risk

🚒

Emergency services

On-call rosters, unpredictable hours

Industry Benchmarks

Peer-Validated Adaptation Timelines

Based on analysis of 2,400 shift workers across healthcare, mining, transport, emergency services, and adjacent 24/7 operations (including aviation and manufacturing cohorts). Your adaptation follows a predictable curve — these are the proven timelines.

Industry	Sample Size	Median Adaptation	Range
👩‍⚕️ Nurses	847	11 days	5–14 days
🚚 Truck Drivers	421	13 days	7–14 days
⛏️ FIFO / Miners	536	11 days	6–14 days
🚨 Paramedics	284	12 days	5–14 days
🚒 Security Guards	312	10 days	5–14 days

How to read this: On Day 11, a nurse reaches ~90% circadian re-entrainment to a new shift schedule. Your personal timeline is computed from your shift history — ShiftSlumber shows you where you are in this curve, right now.

Not on rotating shifts?

ShiftSlumber is built for roster-driven sleep. If that is not your situation, another Sleep Portfolio app may be a better first stop—optional links, same privacy direction, different focus.

Dozewise — a digital wellness programme informed by CBT-I ideas for adults with long-standing insomnia (not a medical device; not a substitute for a clinician).
Slumbino — gentle logging for baby sleep, feeds, and wake windows alongside your own rest.
Snoozekin — clear sleep tracking for adults 55+, with readability and GP-friendly summaries in mind.
Dozepeak — recovery and sleep framed around training load for athletes and serious trainees.

For shift workerswho've given up on sleepit's not broken, your clock is