Meet Nocta — Sleep smart through every shift

Health And Fitness

Nocta

Sleep smart through every shift.

Every feature, from the first launch.

No account, no login, no cloud. Everything runs on your device and works fully offline — nothing in this post is hidden behind a wall.

What Nocta does

Nocta is a circadian-aware shift planner for the 15 million Americans who work non-traditional hours — nurses, EMTs, firefighters, factory workers, pilots, truck drivers.

The science of when to sleep, when to stop drinking coffee, when to get bright light, and when to take melatonin is well-established. The problem is nobody's packaged it as a calm, account-free, one-time-purchase iPhone app — the leading product (Timeshifter) is $69.99/yr subscription and cloud-tied.

Nocta fixes that.

— Tap to add a shift, or pick from built-in rotation templates (3-on/4-off for nurses, Kelly schedule for firefighters, rotating fortnights, pilot duty days). — Nocta calculates your personalized day-by-day plan: anchor sleep window, caffeine cutoff time, melatonin window (if you take it), bright-light timing. — Calm passive cards on the home screen. No alarms. 'Coffee cutoff in 4h. Anchor sleep window: 14:00–17:00.' — Weekly PDF export: hand it to your partner so they don't wake you during sleep windows. — No account. No email. No data leaves your phone. One-time $9.99.

The science is published in PubMed, AASM clinical guidelines, and Harvard circadian research. Nocta encodes the rules deterministically — no AI, no cloud inference, no surprises. We're not a medical device; we're a planning tool that respects published science.

For every nurse who has ever stared at the bathroom ceiling at 3pm wondering why they can't fall asleep before a night shift, Nocta is the calm, private, one-time tool that finally treats you as the expert in your own life.

A look inside

Tap any screenshot to open the full-resolution version.

What's inside

Shift roster + templates — Add a shift with start/end time and date. Or one-tap apply a built-in rotation template (3-night/4-day nurse rotation, Kelly schedule firefighter, rotating fortnights oil rig, pilot duty days). Edit any shift after applying a template.
Daily circadian plan — Home screen shows today's plan: anchor sleep window, caffeine cutoff time, bright-light window, melatonin window (if enabled). Rules are calculated locally from published circadian science — no AI, no cloud.
Calm notification digest — Single configurable summary notification 2h before each transition (sleep, caffeine cutoff, etc.). No nag alarms. Disable any category.
Weekly PDF export — One-tap export of the week's shift schedule + circadian plan as a clean printable PDF + CSV. Share via AirDrop to your partner so they know when not to wake you.
Adherence log + stats — Track when you actually slept vs the plan, when you actually had coffee vs the cutoff. Light, optional. Visible as a weekly trend strip.

Why we built it

15M+ Americans work shifts that disrupt circadian rhythm and increase cardiovascular, metabolic, and mood disorder risk by 30-40% (NIH StatPearls 2024). Published circadian science (anchor sleep, caffeine cutoff, light exposure) is well-known but not packaged as a calm, one-time-purchase iPhone app. The leading produc…

What makes it different

Nocta is the only circadian shift planner that is (a) one-time $9.99 vs Timeshifter $69.99/yr, (b) zero account, zero cloud, zero email — all rules execute on-device, (c) calm passive notification UX vs nag-style alarms, (d) built-in rotation templates for common nurse/firefighter/pilot schedules, (f) iCloud Family Sy…

Who it's for

Anyone who wants honest tracking without a coach, a subscription, or a streak guilting them at 11pm.

In one line: Sleep smart through every shift.

Try it

See the Nocta app page for the full feature list, the info table, and support links.

Use Nocta, found a bug, or have a feature request? Comments are open below — anonymous is fine.