ShiftRhythm vs ShiftRest

Night shifts flipped your sleep? Enter your roster and ShiftRhythm tells you when to sleep, when to nap, and when to seek or avoid light — today. WHAT IT DOES • 24-hour body-clock dial — see your estimated melatonin onset (DLMO) and biological night (CBTmin) at a glance • Light, nap & caffeine guidance — timed to your circadian rhythm and updated as your shifts change • Sleep score, sleep debt & recovery — last night's sleep plus HRV and resting heart rate from Apple Watch, telling you whether to push or recover • Presets that match real rosters — Panama 2-2-3 schedule (day/night), Pitman, DuPont, Fire 48/96, 12-hour rotating shifts, plus Korean and Japanese patterns. Or build your own custom rotation • Melatonin timing card (optional) — an informational window based on your estimated body clock. Not a recommendation to take melatonin; talk to your doctor or pharmacist first BUILT FOR SHIFT WORKERS Whether you're a night shift nurse, a firefighter on 48/96, a plant operator on a DuPont rotation, or a driver on a rotating roster — ShiftRhythm adapts to your schedule, not the other way around. • Tap any calendar day to correct that day's shift • Works from your schedule alone — no Apple Watch required • Apple Watch app and widgets included; available in English, Spanish, Korean, and Japanese PRIVATE BY DESIGN • No account. No server. Your data stays on your phone. • All circadian math runs on-device — health data never leaves your iPhone • No ads, no tracking PRICING • 30-day free trial — full features, no account needed • Then Monthly or Annual (Annual saves vs. monthly), or a one-time Lifetime purchase if you'd rather not subscribe • Subscriptions auto-renew; cancel anytime in Settings > Apple Account > Subscriptions Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yoonspower.github.io/shiftrhythm/privacy.html ShiftRhythm is for general wellness and reference only. It is not a medical device and does not diagnose, treat, or monitor any medical condition. Values shown are estimates and may be inaccurate. Consult a professional for health concerns.

After a night shift, you're exhausted but can't sleep. And every week you wonder: when am I actually supposed to go to bed? ShiftRest turns your shift pattern into a sleep plan — main sleep, naps, caffeine cutoff, and light timing — automatically. No account. No server. Your data never leaves your phone. Works offline in the break room. SOUND FAMILIAR? - You oversleep after nights, then can't fall asleep before the next one - You never know when (or whether) to nap before a night shift - Your caffeine timing is guesswork, and it wrecks your day sleep - Every sleep app assumes you sleep at the same time every day. You don't. WHAT SHIFTREST DOES Enter a month of shifts in about 30 seconds Tap day, evening, night, or off stamps onto a calendar — or drag to paint a whole stretch. Save your usual rotation as a template and apply it in one step. A sleep plan that follows your roster A circadian model reads your pattern and suggests main sleep, split sleep, and on-shift naps. Your home screen shows one line: what to do next, and why. Know when to stop caffeine Using a caffeine half-life model, ShiftRest calculates today's last-coffee time and reminds you — quietly. Light timing guidance Gentle reminders for when to seek light and when to avoid it (sunglasses on the drive home after nights), so your body clock shifts the way you need it to. Post-shift mode After a night shift, the app greets you with a dimmer, warmer screen and just two things: nap until when, and when to sleep tonight. Zero input required in the morning. Review, without guilt ShiftRest reads your sleep from Apple Health and lays it next to the plan. A monthly tile grid shows how well-rested you've been. No streaks, no scores that shame you. THE SCIENCE, IN THE OPEN Plans are based on the two-process model of sleep regulation, caffeine half-life, and the human phase-response to light — standard tools in sleep research. Every suggestion comes with a "why?" and references you can read in the app. We suggest; we never prescribe. PRIVATE BY DESIGN - Everything is computed on your device. There is no server. - No account, no sign-up, no tracking SDKs. - Notifications are worded so your roster stays your business. FREE - Unlimited shift entry - Today's and tomorrow's sleep and nap plan - Caffeine and light reminders for today SHIFTREST PRO (7-day free trial) - Plans up to 7 days ahead - Plan vs. actual dashboard (Apple Health) - Post-shift recovery mode - Notification customization $19.99/year (about $1.67/month), monthly and lifetime options available. MADE FOR Nurses, doctors, paramedics, EMTs, factory and plant operators, security, drivers, dispatchers, hotel and retail overnight staff, firefighters, air and rail crews — anyone who works while the world sleeps. --- ShiftRest offers general sleep-timing suggestions and is not medical advice. If you suspect a sleep disorder, please consult a healthcare professional. Terms of Use (EULA): https://shiftrest.netlify.app/terms/ Privacy Policy: https://shiftrest.netlify.app/privacy/