About this app
What Nocta does
Free. All features included. No subscription, no in-app purchases, no paid tiers — everything works the moment you install it. 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. 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. 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.
Features
Built to be useful, not noisy.
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 it exists
The problem
15M+ Americans work shifts that disrupt circadian rhythm and increase cardiovascular, metabolic, and mood disorder risk by 30-40% (NIH StatPearls 2024). The leading produc…
What's different
How Nocta stands out
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…
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FAQ
Questions about Nocta
How much does Nocta cost?▾
Nocta is free. All features are included from day one — no subscription, no in-app purchases, no paid tiers. Everything you see in this listing works the moment you install it.
Where does Nocta store my data?▾
On your device. Nocta is built privacy-first: no account is required, no analytics SDKs, no third-party trackers. Nothing is uploaded to a server we control — the app works without one.
What platforms does Nocta support?▾
iOS, on iPhone and iPad. You can find the latest availability on this page.
How do I get support for Nocta?▾
Use the Support link on this page, or email support@allthingsn.com. We answer every message and keep responses on the same thread.
Does Nocta give medical advice?▾
No. Nocta is a planning tool that respects published circadian science — anchor sleep windows, caffeine cutoff, melatonin timing, light exposure. It is not a medical device and is not a substitute for a sleep clinician.
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